I've seen some ugly "performance" valve work lately. But 1/4" of adjuster seems excessive to me. Instead of using the "roll it between your fingers" routine, I would pull the intake off, inspect the cam lobes, and set the preload on each cylinder properly. With a hydraulic cam, it should not need that much adjustment if things are done right, and tightened properly. Maybe once a year. The tappets used on the HL cams may be slightly noiseier than a typical hydraulic. This is normal. Trying to adjust out the noise can result in damaged cams. The time to look is before all the iron dust runs thru the engine.