After reading some of the threads on engine timing, I decided to check my own timing with a light. I have a 1600 GT Jr. and after running the engine past 5000 rmp, I noticed the advance was quite a bit less than the MAX timing mark. The car runs okay but never really had that punch. If I loosen the pinch bolt at the base of the distributor, should I rotate the distributor clockwise to advance? Should I rotate it while the engine is running? Or just twist it in small increments while stationary and then use the timing light until I get the desired reading?