[krausewich]

I just checked out a kirkham or 4000 series for sale on Cobra Country last night that
had this pic. I'm not sure if this is the suitcase bump that you a referring to, but I grabbed
the pic, because I had never seen this mod before. If this is it, I bet you could scale it in a
CAD program, using the 3/4 support next to it as reference. If you get me your email address,
I can send the higher res image.

Hope any of this helps.
Mike.