I ran into this problem this summer when I rehabbed Vee Jay 2's boom ... the forward block sheave was locked solid. Checked Vee Jay today here in Naples and not only was the sheave locked solid being compressed by the becket ... also was rigged as a 2:1 instead of a 4:1. The Kenyon block looked under spec'd and is probably a problem for anyone who hasn't checked it out.
Naurally there are 3 SS screws into each AL boom end fittings. Two I was able to unscrew, three broke, and one was finger tight. Followed old practice of grinding smooth ... redrilled a half inch away, tapped up to 1/4 in. and reassembled.
[don't really need to open up aft end of boom as the needed access is at the mast end of the boom]
![[Linked Image]](https://j30.us/ubbthreads/ubbthreads.php/ubb/download/Number/236/filename/BecketCompressionb.jpg)