I think everyone has a little bit different way to do it. I did it with Terry last month on a BBC, and he did it differently than I ever did, but worked out great and very quick! Comp Cams manual says a totally rediculous set of steps, and I found a few more engine specific (and complicated) ones on the internet to accomplish the same basic goal.
Goal is the same in all cases, make ABSOLUTELY sure the lifter to the valve you're about to adjust is on the cam base circle, it's that simple. It really isn't like launching a missile.

Ray
PS, FWIW, if you're getting the valves adjusted somewhere even close to right and you're losing compression, I'd be thinking you're cam timing is WAYYYYY out......like shot timing set, or not timed correctly to begin with. Just my .02