It's been a long while since I did a full on random walk, and when I was walking around this little town while visiting my other half, I heard about this curse. Intrigued, I asked my girlfriend and her family about this curse, and found some interesting things out, some fact, some old tales, passed down through the generations.
To find the cache, you must walk in my shoes and go around and find the old medieval side of South Queensferry. There are old stories about witches, ghosts, and even a cursed bell in the little town. The walk should take you no more than an hour, if you've not done the Traditional caches in this town, you can make this into a nice roundabout walk to save you going back and forth. :)
***Starting from the posted coordinates, you'll find yourself at a place called The Binks, located behind the old Priory Church (which is the next Stage closeby). There's an old natural jetty which was formed by the rocks with 2 plaques on it and was regulary used as the landing place for the Queen's Ferry - which is how the name of this little town came to be. Named after Margaret, the second wife of Malcolm Canmore, King of the Scots from 1058 to 1093. This jetty was used until 181D, which allowed ships free passage for the pilgrims on either side of the shore. Some assume Margaret even used this jetty herself.
***Continuing from here, if you turn around from the plaque you'll see the Old Priory Church, which was also known as the Priory Church or St. Mary's Episcopal Church. This building was made in the mid 15th century for the Carmelite Order, which served as the parish church in the 16th and 17th centuries, but it then fell into disrepair. It's now the only medieval Carmelite church still in use in the British Isles. Looking around the back courtyard, count how many benches there are immediately around the anchor and then minus 1 to get C.
***Moving on, your next stop is the Town Hall also known as the Tolbooth. This building is not as old as the other buildings in this multi, going back from 1812 but it is definately worth mentioning as there 2 old holding cells on the second level under the clocktower archway near where the garden is - the prison at the time? Some have even said if you knocked on the cell doors there, they'd knock back - perhaps an old cellmate? For this location, look for the old plaque with a Lion's head water fountain under it. Look for the blue cross, the number of feathered animals surrounding and in front of the blue cross = B.
***Not far from this place, is the Vennel, which is the main source of the curse I found. This old building has a bell that's said to be cursed, as mentioned in local legends, the bell in the belfry says:
"David Jonking, maerchant of Edinburge, gifted this bell to the citizens of Queensferrie. Cursed be they that take it frae there."
So, basically whoever rang the bell or took it from its resting place would have doomed the town - interesting local legends here.
For E, look around the Northern wall of the building for a brick with a year on it. E= add the last two digits together then +1.
If you fancy looking around the Vennel, just slightly further up the path is the old Masonic Hall, which is just outside the old school building at the bottom of the Churchyard.
***Your next stop is Black Castle, which is one of the oldest buildings in the town and is just around the corner from the Vennel. Dating back from 1622, the original owner was William Lowrie, a sea captain who was lost at sea. When he was lost in sea, his sister in-Law Marion Little was accused of paying a beggar woman Marion Stein to cast a spell to make his vessel sink. Both women were tried and burned for witchcraft.
Looking across the road from Black Castle you can see the line of old black lamposts along the street, overlooking the view of the Forth. For A, look for the two words on the top of the lampost nearest the northern wall of Black Castle and count the total letters and minus 1 for A.
***Next up is just something that's mainly rumour, but is definately worth a mention at least. The Witches House was said to be where this old witch and her daughter had lived, and one day the mother heard the daughter was seeing a local man. Not approving of this liasson, she imprisoned her daughter within the house. The daughter, trying to contact her lover, scratched his name on one of the windows using the ring he gave her. Nobody knows what happened to any of them after that. Look for the words St. Helen's above the door at this Stage and find the door number, multiply the 2nd digit of the number by itself to make F.
***The last stop is the Hawes Inn, this place dates back from the 17th century and was featured in Robert Louis Stevenson's book Kidnapped. The place was used to let smugglers and pirates through onto the nearby Inchgarvie Island, via the secret underwater passageway from Queensferry. It is also located under the famous Forth Rail Bridge, and the nearby dock is the most common point for the ferries to leave from to head to Inchcolm island, or for cruise ships to pull in nearby for the tourists who visit.
For G, add the total number of white windows on the main wall where the entrance is.
***Now this isn't a stage for this cache, but also worth mentioning is the Tesco where Ferry Muir is was the main site of the witch burnings were for Queensferry. In Scotland there were approximately 205 executions out of the 40,000-60,000 executions in Europe between the 15th and 18th centuries. These times were called "the Witch Trials in Queensferry" or were known as "The Witches of Queensferry".
On Sept 1st 1641 the Pastor, Ephraim Melville was intent on reforming the evil-doers of the town and it wasn't long before he brought witches (both male and female) to be strangled and then burned at the stake on Ferry Muir, about a 1/4 mile up the hill above the town on the way to Dundas. The last batch of witches were executed in 1644. There is no memorial to the women of Queensferry who were burned at the stake accused of witchcraft. Some locals over the years have said they've been able to smell burning flesh at this location.
Now anyway, back to the cache. The cache is located at: N55 5A.BC(D+4) W003 23.EF(G+1).
You might want to geocheck here: 
Checksum total for all clues after calculations is 41 - this should help if anyone's not too sure. :)
When you get to the final location (please no spoiler pics or I'll delete the log), just take a moment and think about all that's happened here and if the curse actually exists....