Pistons

I'm in Michigan. And I will get all that stuff sorted out. I gotta get a Julie h to make some money first. Once I get a little time I'll start looking into the seized problem and getting the right parts for it

To seize with a sloppy piston, it had to happen from an air leak. Not only replace crank seals, also check the intake manifold. Rubber dry rots and developes cracks that will cause a lean mixture as well. I caught the manifold on my 400WRX before even starting it. That was cracked like you would not believe.

Bad carbs can also cause lean seizure... Had that happening to my 400 wr!

mine had a devious split around the step rim and it was underneath so the weight of the carb held it shut. I only found it after doing a little pop up wheelie and slapping the front down hard on the ground, the bike gave a big "ping" and an overrev for a bit before settling down. after a couple of these over time I looked a little harder and wiggled the carb revealing the split. could have been bad if I had got out onto a big road in top.

the intake isnt the problem i know that because i jusr replaced the seal and checked. but it was probably the crank seals. it had low compression to begin with

the wossner link on ebay mentions a lot of 125's. none of which are CR 125. I have a 1979 cylinder that I want to put on my 1977 bottom end for AHRMA post vintage historic class racing.
the reed valve is different and there are 2 ports in the 1979 and later pistons. has anyone ever seen one of the wossner pistons?

If you had a sloppy piston, you should check the crank well to make sure there is not a broken piston skirt in there. I found that in my 84 250WR engine. The piston that came out was worn but intact but splitting the cases showed damage caused by a prior piston that was ignored by a PO.

my local dealer has a NOS 1st over 161119902 $150

very fair price