I shoot a Mathews FX set up with the MZE. I am finding that when I release the string, the claw smartly slaps the top of my wrist as it drops away. It seems to be tuned well and I get great groups. Should I try to shorten the shaft that' s connected to the cable slide, and try to retune after?

It sounds like the arm may be a little long. How much below the shelf is it when not drawn? Mine just goes barely below the sight window shelf, it clears the vanes and my hand just fine.

Mine did the same thing when I first put it on!
Try moving to the outer mounting hole to make the MZE at full length. The adjust the turnbuckle. Hope this helps It did for me
AL

Thanks for the suggestions. I' ll give it a try and let you know.

KRY226, try putting it in the middle hole on the main arm assembly, or you can call me at muzzy 800-222-7769 and i will walk you through it. Eric