The cache is NOT at the listed coordinates. There are often lots of teenage muggles near GZ, so only search when they are not present. Maybe if those teens read the works which originated "muggles" they could help you with this cache. A) # houses at Hogwarts B) # deathly hallows C) # matching wand cores D) # Horcruxes E) # kids in Weasley family F) # Harry's living parents G) sum of chasers and beaters on Quidditch team H) # movies I) # Hagrid's height J) # Gryffindor boys in Harry's year K) # points for hitting a bludger L) # sorting hats M) # floors at Hogwarts N) # Hobbits at Hogwarts
You can check your answers for this puzzle on GeoChecker.com.
Update 9/19: There are a lot of kids who hang out here in the summer and this cache appropriately keeps getting "muggled".