I had to shim the trigger guard to keep it from hitting the trigger when the action screw is tightened. Trigger is AWFUL--lots of creep and very hard to fire. Very rough when cocking, even after a lube tune. So far, it is not shooting very well. One shot up, one down, one left, one right, etc....... So far, I have shot boxed Crosman Premiers, RWS Meisterkugeln Standard, and Crosman Pointed. The chrony numbers are good--average of 725 FPS (boxed Premiers) with a extreme spread of 10 FPS. Not sure why I cannot get a tight group. So far, not too pleased with this one.