Everything depends on WHO did the tune Red,
Many people out there advertise "gun has been tuned" but do not mention WHO Tuned it !
They probably performed their own tune, if anything at all, so a GOLD TRIGGER was not around, and probably the correct lubes were not around either. Home tunes can be O.K. to Great, but you can't beat having a knowledgeable AirGun Smith Doing the tune with the proper lubes, in there proper places.
Bill