Yeah not too keen on replacing the engine for $200+ when the whole thing cost much less than that. The picco is in good condition too, it was filthy when I got it but after stripping it down I realized that it had barely been used. Unfortunately not really sure where to look for a replacement part.
Was considering perhaps welding it shut and tapping a new thread? Could potentially draw it up in solidworks and get a new one milled, but not sure if anyone I know will do the milling for "mates rates".