aye i know BUT you have increased weight, I did an LGV piston here for an 80 with 30mm nose that weighed 230g 70mm stroke, 50g lighter than where you are at... which means you can tune the piston weight now with steel or brass tophat etc or use acetal to keep the weight down.


get drilling some holes or thin it down some more.

Alloy body, threaded skirt, steel bearing band on the back loctited on (hardened steel) may be the best bet