I bought a 94 JDM b18c a few months ago. I haven't been driving my car much since I did the swap, but I have noticed some clicking noises when I go over a certian RPM. I am assuming this is the valves. Question is, how do I adjust these valves? What are the specs? I don't have a manual, so I would really apreciate some help from someone who does. How to adjust, specs to adjust to, etc. Thanks.