Either you are dropping your bow arm at the shot, or something is loose, defective or not set up correctly.

It sounds like your rest is not coming up the same every time. I am not familiar with how that rest works so maybe someone that has one, or has set one up can give you some pointers as far as what to look for.

I would check to see that the rope that pulls your rest arm is not slipping or something, or that the timing is correct. Also if you are using the bungie, I would switch it out with some rope.

I found the instructions for the set up of this rest on trophy taker's website. Looks pretty straight forward and simular to every other rest of this type. I would do it slightly different than the intructions say to, but that is just a personal thing. You would end up with the same outcome probably.

Another thing I would check for is if it is the same arrow or arrows that are doing it. Maybe you have a fletching contact issue and your nocks need to be indexed to get them all to clear.

Paul