I was gonna resurrect the ol' 250 today.
Was...
Got the power valve shown above, and got the cylinder back from replate, with new piston. Started to assemble it all only to find that when they re-welded the cylinder, they left just a little bit of extra material around each side of the power valve hole, enough to keep it from going all the way in, and also allowing it to bind up.
They were awesome to deal with though. She had a shipping tag to my inbox in under 5 minutes, and I packaged at all back up (with new PV), and it was at the UPS store in under 30 minutes.
Since the KX needs radiators, I guess I'll do the fork seals on it.
Anything to keep from doing yardwork.
I guess I could go drink beer and play my guitar...