I got an 09 Brute 750 that I did a full rebuild on a couple of months ago and have only ridden it lightly for 20 hours or so. It smoked when I first started it when I rebuilt it (normal) and it kinda went away but after a while, it started getting worse and I was getting crankcase blow-by, I could tell by the oil in the airbox. It also seemed to lack power. Anyway, after a while, I figured I should investigate. I found the front cylinder to have low compression. (My memory is failing me but somewhere in the 20-30 psi range I think) . I put a little oil in the spark plug hole and it went way up to the 80ish psi range. I figured I installed a ring wrong or something so I removed the head and cylinder only to find everything looks perfect. There is very very minor scoring on the piston but that's it, nothing I can feel just visual marks. I bought new cylinders and new Wisco pistons and rings when I rebuilt it. Any idea what's wrong with it?