I know what you mean, I guess I just don't want to be too complacent about what I put together. And as I said, where does one draw the line? I'll see if I've got a spare bolt body that doesn't jump, will headspace and bear up on the recoil lugs evenly, and take a spare(correctly fitting) bolthead with out excessive overturn, and if I do, I'll renumber it and build on it.