Installing sleeves, pistons in a later 400 block with the 1 inch piston pins. Noticed one cylinder had a problem with rod fitting to crank just right. First thought was the aftermarket piston didn't have the pin hole square with piston. After installing another rod and piston in the hole with no problems. I then tried the piston out of hole with problem on the other rod I just tried, fit good. Went to measuring the rod and found the crank bore and pin bore were out of square by .018. Put rod in press and went past square and the back to square. Not sure if I can trust it to stay, anyone els