To do a job 100% "the right way" would have ended about 75% of my projects from about the time I was 16 till 39... LOL because of cost. I home ported and lapped so many valves, but the right way would have been "all new guides, 5 angle valve job, resurface the heads, and bench flow the porting!!" and a few hundred dollars I didn't have. My cars ran good though :)