I just put on a set of roller tip rockers (1.6 ratio. I had a set of full roller rockers, and I thought they were just wearing out, because I had a noisy valvetrain. Well my valvetrain is still noisy. Even after sitting for fiftenn minutes, when I start my car there is valve clatter. It's not noisy after that, and if I start it after five minutes it's not noisy. I know this can't be normal. I have the lash set at 1/2 turn down from zero. Any ideas??