I did clean the grooves well. I pulled things apart and used plastigage. The mains and rod checked out to be in spec. It looks like the #1 piston is ever so slightly cocked toward the front of the motor. I did not check the exact measurements, but there is just a bit more room to the rear side of the piston than the front side.
I can turn the crank with not a lot of problem using a 24" piece of square tubing. I just notice that at certain times I hear more of a scraping than at other times. I am not gouging the cylinder and everything else looks ok.
Maybe I am being overly cautious.