I really don't want to mess up the cam in the new 400 I just started running a month ago. I have full roller rockers on it. We set up the valve adjustment on the stand, and it was just fine. Then about 75 miles into it's new life, they started ticking a bit, and kept getting worse. So, a week ago. I readjust everything twice. Fire it up, and it's ok. The rocker arm locks had held fine, but most of the rockers had to be tightened down another turn or so. Now, its slowly starting to click again. /forums/images/graemlins/angryfire.gif If I just keep having to tighten them down considering they arent coming loose, soon the cam is going to be flat. Anyone else had experience doing valve adjustments with roller rockers?