I took the engine apart because the rear bearing was making noise (and in hearing from other big OS 2 stroke users the rear bearings go fairly quickly, so it's been replaced with a Boca bearing). When I went to reassemble the engine I was reinstalling the pison/pin assembly and noticed some wear marks in the track where the rod rides, and sure enough when reassembled the rod just touches in that spot. With the back plate and head off the engine, I can feel the rubbing when turning the shaft. With everything reinstalled the rubbing is less noticeable (due to pressure, etc).
The engine runs great, so I'm thinking that with proper lubrication it will just wear itself in, though now I'm thinking that this might cause extra vibration?

Just wanted to hear a few opinions before I fired the engine up again. To sand the rod, the best thing I have is fine grit sand paper. Sounds to me like it might be more trouble than it's worth?