This summer I went from an index trigger release to a Carter 3 thumb release because I have heard using a back tension is the way to go. My problem is as I am applying back tension my pin gets shaker as I apply tension until it finally goes off. I tried going from 60lbs to 50lbs that doesn't seem to help. My true draw length is 27" which keeps my bow arm fully extended and it feels comfortable.

Does anyone out there have a clue what I might be doing wrong or am I just getting old and worn out....

Thanks