One of "Your" air rifles..

[Talon]

I don't think you can adjust the ball detent Mort . I meant the actual barrel pivot bolt . I would definitely go for the one piece mount . If that doesn't work I'd try loosening the barrel pivot bolt a tad . I know it sounds crazy but it could just be too tight . No the 30's lock up isn't the best design out there . There aren't many bad reviews on the rifle though so the basic design must be fit for purpose . I hope it's just the mounts .The fact that the lock up feels different at times is a little concerning though .