I have a mystic venom boom not sure of the size but I use it for my 5.8m - 3.2m sails. I noticed the clamp has an obvious 'crack ' in it when I had it rigged recently..On further investigation it closes up when there is no pressure on the clamp ( unrigged) and is where a join is in the part that wraps around the mast. I don't think it is a critical part but want some opinions..I've been using it like this for a while and it seems to work ok although I got a bit nervous yesterday and didn't clamp it tight enough and it slipped down a bit..



The crack open under load


The other side not open..


closed up - not loaded





Should I worry or not?