Reboring to last size and GS piston questions

[KTy]

Two simple questions

* Is it a "time bomb" to rebore a cylinder to its last oversize ? My Polini 133 was rebored a year ago to 57.8mm, I have to rebore it to 58mm to fit a GS piston... Worthless ?

* What is a safe clearance (tolerance ?) for a GS piston in a Polini 133 ? 7/100 ? Or a little more ?

Thanks

KTy -

[100 spezial]

i have the same configuration. in 2 days i hope to start the engine, i hope that ther are no problemns, but i thgink not..

if i remember right i have 8/100...

[amazombi]

make it 8. what's the problem can't think of any.