I don't recall if I was hearing this before I did a big-bore kit & cams, or not. I'm sure if I was hearing it, it wasn't this loud. I get a valve-train kind of tapping from the left side from about 2200 through 3200 RPM. It peaks at 2500 RPM, and it's pretty loud. As you get farther from 2500 (higher or lower) it gets quieter. The engine is an '03 TC, 95", Andrews 26a cams with Torrington inner bearings and new tensioners, stock pushrods, stock heads & valve train. Is this pretty common? Time for adjustable pushrods, or something else?