Thanks , I found it, it was up indie the tube.
Preliminary findings are the connecting rod from the piston where it connects to the camshaft is damaged. Looks like lubrication failed in that area and roughed up the aluminum and stopped sliding. Everything else seems smooth and free. There is a lot of carbon build up in the valve area and the top of the piston. I will clean it up and see what else I can find.
Thanks for all the help and suggestion guys.
I may have a line on another engine 19.5 horse Kohler. Hope it fits.