I need to re-do the head on my 350. I understand the generic formula of cleaning and lapping but as I recall the stellite coating on honda's valves makes anything other than minor lapping a bad idea? So I have been looking into better DIY options for cutting seats/ valves and reaming valve guides. Will have to recycle valves as it seems the stock 350 valves are unobtainium. Not to worry I have enough heads and can choose the best of what is there. So, who has some input that will help me out?