Climberman, It may help you to know which rocker is noisy.A way I use to determine the noisy one is with the engine running at a low idle to minimize oil loss,lay your fingers on the side of the rocker and you will feel the shock/vibration of the clearance taken up causing the noise.When you locate the offender take the time to shut down, remove the rocker assembly and look for a worn tip/ball/ball seat/pushrod seat and pushrod ends.All these areas of likely wear are dirt cheap to correct and may save some more serious damage such as cut off stud or damaged valve tip.It is very common for the ball and ball seat to wear causing the rocker to rise increasing the length of the assembly.Something wore causing the dimension change that is out of the adjustment range of the hyd lifter or less likely the adjustment nut could have backed off.
It works for me.

Bob Taylor