I had Gene Turbo Tune my TF89 .22 and it's worth every penny, not only is th gun smoother but it's less hold sensitive now by far, there is no spring noise or buzz- just a solid thud, mine is shooting harder now too, my gun was brand new when i sent it to g
Gene but had a partially torn seal and a week spring, now it's shooting in the 26fpe range , when it hits a bird or squirrell theres nothing but a solid thwack and a dead animal, quick humane kills every time, and the gun is dead accurate, just for fun I sit and break branches off the trees in my yard with it at 40 yards. Gene will work magic on your gun, the trigger will be better too.