I love this sled when it is running. dropped in 3 new pistons a while back. the following year put new crank and bearing in it. now one of my pistons is low on compression. i think it is cause each time i tore it apart i honed the cylinder walls therefore now standard pistons are slightly too small. looking at buying bigger pistons and didnt know if anyone has done this and if i buy standard pistons .20 over do i need to bore it out to accomodate the pistons or can i just put them in and fire it up. thanks for the info.