if you have QUALITY VALVE TRAIN and set them up correctly the first time and use the correct oil you shouldn't have to adjust your valve lash often at all. that is a blanket statement. I understand that some combo's require more attention than others. When i built my engine I used the comp cams magnum rockers with there adjusters. I set my lash up for break in .002 tight when engine was cold. broke in the cam. reset lash when engine was hot (was nearly perfect). I put 800 miles on the car and rechecked the lash. only had one rocker that was off by .002. that was most likely me setting it that way. the point is that if you use quality stuff and set it correctly they are nearly dummy proof.
