I may also tell you,,be careful to not try to get the Lisle compressor TOO tight. Overtight causes as much or more trouble as too loose, if you can understand my meaning. Once I got the right oil ring and the right depth on the ring grooves, mine went in easy. FYI,,the next Gen 3 I did, I used Ross pistons with 1/16 1/16 3/16 ring pack and that went WAY smoother.