I figured out the slight idle surging.  I went through the steps in the article previously posted problem #8.  I started by pulling the BAC valve (bypass air supply valve) and cleaning it out. Next I tested the air adjust screw with not much change. My problem did turn out to be the throttle stop screw not being adjusted correctly.  I’m guessing that the previous owner had trouble getting the car running so he started to adjust everything, even stuff that shouldn’t be adjusted.