I've had this 590 for over four year's it was just muff modded and retuned been great no issues. tore it down recently and mildly ported with base gasket delete the piston and ring still looked new but i bent a circlip saving it for later.
I'm trying a golf piston and ring i had runs excellent now modified a Bailey's special oem 372 full wrap for it handles great.
I'm trying a golf piston and ring i had runs excellent now modified a Bailey's special oem 372 full wrap for it handles great.