I have about 2k miles on my car after a BHG. I had the head reworked (surfaced, new seals, 3 angle valve job, ect) before reassembly & everything was great afterwards. Now I'm starting to get a lot of valve noise. A loud tick to be precise. What took so long for the noise to start & how do I get rid of it? I didn't think 7MGTE's had adjustable valves, correct?