I Won't Hold My Breath GC1YA42 was a very good cache but it was archived when Stage 1 went missing. It has occurred to me that it's not missing, just out of place. After getting the numbers off of the dog tag someone was a little off dropping it back in to the lake.
As a Mulit-cache with a physical Stage 1 it needed to be at the posted coordinates but as a stage of a Mystery cache there's no such requirement.
To find this cache you'll need the same four numbers that were needed to find I Won't Hold My Breath.
The final is at N 42° 29.ABC W 073° 10.DEF
A equals the fourth number plus 4.
B equals the first number plus 3.
C equals the third number.
D equals the third number plus 1.
E equals the first number plus 5.
F equals the second number plus 6.