So yesterday morning before the sun started scorching the earth I got under the truck, loosened all the rod bolts, then set about torquing them all down, 15lbs to start. All torqued and engine no turny. So today I spent a little time preparing for removal, not too bad for 1.5 hours of work with zero broken bolts.
The plan now is to pull engine and trans out on one piece, find the problem, refresh all seals/gaskets, repaint all under hood items, then reinstall. I ordered up a new flexplate, battery tray, hold down, solid oil pump shaft, and oil primer tool this weekend also.