Thanks Kenneth.
My mast track stops just below the exit blk, and the mast above the exit blk is only about 3" tall, and a few inches front to back. I could reconstruct the whole masthead I guess, and move the exit blk down a bit, and make sure there was sufficient holding for the clutch. How is the trip line routed on the 40s? I share Pepin's concern for the potential for the trip line and the hlyd to foul each other inside the mast. Maybe the trip line could be run thru some plastic tubing that would run the length of the mast.
I'm envious, I'd love a ride on one of those!

Dave

I'll take pics of the masthead as well as the mast base, I'm headed there tomorrow afternoon.