stabilizing film w/DeShaker question

I use DeShaker (VirtualDub plugin) frequently, and with great success.  Now I am trying to use it in a different way, and was wondering if there are any DeShaker experts here who can help me...

I have a film captured in which a small portion of the sprocket holes are also included in the captured frames.  I'd like to use DeShaker to sync onto the sprocket hole(s) to stabilize the film, without using the actual film content.  It SHOULD be easy... just set the window in pass one to ignore everything except the small region of a sprocket hole.  But I can't come up with any settings that actually work for a region that small.  It just ends up not detecting any movement at all.

Any settings worth trying?

Ok, no answers here.  I'll answer it myself...  I just emailed Gunnar Thalin (author of DeShaker).  He said that he doesn't think that DeShaker could be used for this, as it can't directly detect the movement of black borders.  Detecting the movement of sprocket holes would only be possible if they were very well defined -- the ones from my SW film are typically rather faint and thus appear to flicker when moving from frame to frame.  DeShaker is designed to aggregate the movement of a larger mass of RGB content.

He was kind enough to look at a small section of the test grab I did last night, and on that formed the above conclusion.