Hi, Brion,
I'm not sure anymore what the pin sizes are... Most likely all of them 3/8". The roller furler may be oversized requiring a 1/2" pin where the stemplate only provides 3/8". I vaguely recall the rigger from KKMI who was working on the boat (Kevin) telling me something about 1/4" wire and 1/2" vs 3/8" pins and that he had to take a toggle with a 3/8" hole and install it on a 1/2" stud to match the hole on the stemplate. At that time it didn't make much sense to me, so I trusted his judgement... It's possible the previous owner "upgraded" the wire from 7/32 to 1/4 on the forestay and backstay since I also vaguely recall Kevin telling me that it's strange to see wire of different sizes on the forestay/backstay and shrouds.
Or maybe I'm imagining this
Thank you for the tip on the fairlead - I think you're right and I need a block on the bow rail.
Many thanks!
Gleb