No luck Adjusting Rockers

When I was building motors for a living, I didn't use the count the turn method. There's a chamfer inside the lifter before the bore for the inside piece's bore starts. I ran them down to the bottom edge of the chamfer and that was it. Never had a problem using this method. I would definitely isolate the noise before replacing though and figure our whats going on. I had my roller rockers hitting the springs and retainers. (Isky solid cam, SS valves, Crower double spring w/ dampners, retainers and locks, and Speed Pro roller rockers.)