What's goin on man, I can't post in the for sale section yet so ill message you here. I don't know where you got your piston from but a lot of places will let you return/exchange products. Same exact thing happened to me, I bought a wiseco prolite piston .010 from motosports.com and I ended up having to get my jug bored .020 over. They let me exchange the whole top end kit for a .020, all I had to do was pay to ship it back to them and they shipped me the new one back free of cost