Scooterotica

Ok I know beedspeed do them but does anyone else know of anyother stock ive had it rebored and I supplied the piston 63.4 mm but the tw@7 has over bored it by .5mm soi need a 64mm one they have agred to pay for it any ideas ?

It must be thin on the walls i have a 63.8 which i thiught was the most you could go.
good luck maybe german GS pistons might be an option.