Jetting with a toomey pipe with bigger piston..

[Scottt07]

Ive been having a problem with running lean i noticed my headgasket was leaking alil so i decided to do the gasket and buy new rings.. i ordered new rings off ebay to turn find out i have a wisco piston .50 over..
do i need higher than a 340 main?
i think i should be good after the gaskets on..
Do i have to treat it as a break in again? im still using the same piston.. i honed the cylinder a lil too

 

[2stroke4ever]

you have to get the new rings seated with the freshly honed cylinder, break it in all over again, as far as jetting just for piston size, no, 50 over is not a significant difference, if your still lean after fixing the head gasket problem then richen her up