I have close to 50 hours into assembling this short block. You can not rush this. I m so glad I waited and ordered a new bore gauge. It set me back a pretty penny, but boy would I have been off if I trusted the plasti gauge. Everything is dialed in, the crank spins so nice and free. (before rods and pistons) I also installed new cam bearings. It too spins and feels VERY nice.