'Yes, there is doing things the right way, but with these heads that is no guarantee. On the other hand sometimes you have to be like the Joe Petroni character ("I can't hear a thing..., there's too much noise") in the movie "Airport," where you throw away the manual and do what it take to get the job done.'
I have that page in my book as well, and I go there in 15 seconds if I have to. I prefer to do the accepted thing but many times it's just not justified, at least the extra cost or time is not. I've been known to change just one cam bearing in head, or only grind exhausts and not intakes, lapped only, or other non-accepted practice MANY times and never suffered for it yet. In fact, can't kill the cars. I lap in using a drill motor, been told a hundred times it can't work, luckily the car cannot hear.