I have a Crower cam and valve train. My head was tapping slightly, so I decided to adjust the lash and see if I could make it a lil' more quiet.
I set and double checked the lash. It started tapping worse! So, I waited till it cooled off again, and tried it once more, adjusting .001 less then what the cam card from Crower says on both in/ex. Still loud.

Any ideas?! Im stumped and I don't want to go lower, I don't feel like damaging my expensive valve train.

thanks