Brad,
Running AHC yesterday, I noticed that Lateral AHC tracking light stayed on when the tracking convergence rate = 0.0.  All other axes worked ok, just lateral would stay on.  It never went off.  The AHC process was really held, just the indicator seemed wrong.  I could click off a harmonic and it would not converge back w/ convergence rate = 0.0 even though the light was on.  I will look into this, but you might have a better idea where to look.
Rod
