Hi there,
Any pix of the gun and closeups that have failed?
I have restored a Gamo .22 rifle and am learning a little about gunsmithing (Spring & Co2).
I have recently purchased (from a guy in this board) a Gamo PT80. It had been partially dismantled and part put back together again. With bits left out. I have reapired the broken parts and am now on the way to rebuilding the gun with the bits in correct place
If I can offer nay help I will.
All the best
Tony