I am the Tin Man!
So I recently purchased a Carter Chocolate Lite thumb release, switching from a Scott lil bitty goose. My groups tightened up immediately and I have been pleased for the most part. The only problem I have is that I had to change my anchor point and I havent been able to find a comfortable spot to anchor my shooting hand. When I seel the pro shooters using a thumb release they generally shoot with their thumb strait down, to do this with the Carter though it twists my string loop to a 90 deg angle because of the direction of the jaws. I have noticed some of the other thumb releases out there have jaws that swivel and that seems like a good option. I would like to see some photos of some of your anchor points or looking for any advice or input.