Oh check out the other thread as the 750 of heads sometimes had minor issues that r readily rectified. The pushrod tube bosses in the head are variable Fer depth as well. A rather learned fella was quite gracious. And showed me alot of the info I've passed to you n others . If not for his wisdom I'd be still pulling my hair out.as to the out of shape... yeah you'll find some are even not spaced centered over the crank throws.... they sure r forgiving old engines! Dressing all the flat faces is a great thing. I pull the studs do that myself.