Well, two steps forward, one step back. Discovered some of my pistons are not pressed on correctly. The bearing lock tangs on Chevy engines always assembles facing the outside of the engine. On the big block, at least those with the factory shaped domed piston, the pistons are left bank and right bank. Normally, on HP replacement pistons, this really wouldn't matter. However, since the factory pistons use an offset piston pin, it does. You would think with a big "L" and "R" stamped right on the piston tops, that would be a clue. I have to handle this carefully, because this is the only machine shop left in this area. I am sure it was a simple mistake, as they probably don't press many stock style pistons. Still though, it's an inconvenience for me.