i just swapped out my head on my g54b had a jet head bought a non jet head but had to go to manuel rockers i still have the stock cam in it got it all adjusted for valve lash thats .15 mm for intake and .25 for exhgaust still very noisy and it dosnt feel like its hitting on all 4 cylinders .. other modes include a 3236 weber a pacesetters header kn and n filter and an electric fan doi i need to replace th cam too or are my adjustments to loose???