Hi mark yeh I stripped it down cut the spring a pain really cause I had to do a coil at a time heat the end close it down so it sat flat then take it gun shop to check it till it was within legal limit. I deburred it all inside polished up piston and trigger sears surprising the size of burrs that are left on something with moving components then put chromoly grease on spring and trigger unit runs real smooth happy with it now. Want tx200hc next and have a go at hft that looks a laugh