The problem you're having is the inability to relieve the pulling pressure on your index finger and transfering the pull to your other fingers. The Backfire solves this problem by isolating the index finger pull to the bearing. The body of the release is free to rotate no matter how hard you pull with the index.Well, right now I am using a Stan Micro Trio. I like it but.....some days it is easier to work than others, and the days it is not easy it seems like I could pull through the shot for minutes and still not get the release to fire. I also know that some of this is due to the minor, minor differences in hand placement on the handle itself.....and some of it is me being lazy with my back tension.
I thought that the bearing on the middle hole would make it a little more consistent.....just a thought.