I'm just looking to improve this machine. It's one of those craftman vacuum/chippers. It was given to me and was in tough shape as far as oil consumption. Was leaking out the crank seal as well. I'm looking to use it a couple times a year but am suspecting the rings are worn. The cylinder is not scored but i haven't checked it for trueness. It runs but leak down isn't so good. Losing quite a bit of air into the crankcase. Right now, I'm just trying to ascertain whether or not I'm even going to get parts for it or if it's even worth it. Having trouble cross-referencing the numbers. I'll post a new separate thread appropriately titled for that stuff. Thanks.