dave,
first => nice boat
2nd=> in/on the VX40/Extreme40 the clutch is attached to the "back" of the mast, It is bolted trough the mast and the mast track - very simple and strong solution - [the VX40 has a track and car type of system for the main]
The mast at the VX40 is open at the top so "easy" access. I think the vx40 mast are not tappered and I could get my hand inside to get the lines out [I helped the crew to swap the damaged mast - and got a ride in return- very cool]
