yeah they do wiggle.... like a 1/16" lol at first i was like wtf..... but heres the deal..... after running your car and then honing it slightly your opening up the cylinder walls a bit..... after your motor breaks in and your cylinder walls glaze and rings seat your tolerances could grow out of mark.... but thats all hypothetical....


if i were spending 500+ on parts id also spend the few hundred to get it bored just right. i based my whole build just on the fact that i got a killer deal on my pistons and rods..... so you can see the catch 22.