Hi all,

I'm thinking of doing some piston tinkering, now a few questions to the tuners amongst us

If you can get a decent mirror polished saddle/area on the rear of the piston, is it really worth buttoning the piston for smoothness?

Is it actually worth buttoning the piston, does it really make that much difference?

What is the best weight for a piston?

What is the best way of lightning a heavy piston, machine off a bit of the girth in the middle or drill holes?

As for seal sizing, what's the best way and what's the sliding fit supposed to be like, should it glide down under it's own weight or a gentle push from your finger?

Thanks for any advice.

Pete