Talon SS troubles

I have had a Talon SS a couple months with 100 shots through it. Initially the tophat came loose with few shots and Ingot that resolves. Blue loctite fix.

Now I see the tophat is secured but the piece of the “valve” is turning as I shoot. It’s rotating with the tophat in the tank every 15 or so shots. Just slowly moving clockwise little by little. Any experience with this problem. I dread another interaction with Lea who answers Airforce’s phone line. I’ve never experienced such poor reaponses from a customer service representative. Any help or advice with regard to the entire valve turning is appreciated.

thanks ! 
J
 
Could you please be more specific. When you say the cocking mechanism won't go all the way back do you mean that it won't lock in place as in you cannot tilt the knob to either side? If so, check that the tophat hasn't worked loose and crept forward (or upwards) because if it did then it likely closed the clearance gap in order for the knob to be set to either the left or right side.