84 atc 250r problem

[daniel_250r]

hi all, i had recently bought a new 70mm piston and stock sleeve for my atc 250r i put the sleeve on top of the old one and it is huge there is no way that the new sleeve can be pressed in theres about 1mm differrence between the two any ideas what is going on here, and my bore on the sleeve right now is 71mm thanks!!!!:wondering

[daniel_250r]

no one knows what has been done to my cylinder???

[NOS_350X]

you have to press out the old sleve before the new one can be pressed in.