well my motor sat for 2 years and I just decided to start it. what a mess! turns out that the intake gaskets i put on were in error. I had a huge exhaust leak so I fixed it. after that I it ran well but the rockers have a slight clatter. i thought it might dissapate however its still there. so when it idols the rockers clatter on and off. should have i primed the lifters before i started it? I also notice a slight vibration for a moment when i rev it up. do you think that the lifters could cause this problem? i had the engine balenced. and I get 45psi im freaking out. help! any ideas?