Honestly, just get the top of the block drilled and tapped and all is well.

I am a rapid-ist also, but once the top block BTAS mod is done, its just as secure as the old tractor.

Mine has been apart at least a million times with all the modifications and cerakoting etc, but when you put it all back together it still hits what you point it at with a boring monotony....I swear sometimes I can hear it shout "Gleichschaltung" and "Sieg Heil" as it voices encouragement to the pellets mid flight