I fabricated the longest handle and knob that would clear the table and here it is.
The other bizarre aspect of the 8810 is the stitch length adjustment method; I won't explain it here but the extended handle makes adjustment much easier.
I did an experiment with the stitch length to see just what range I might want to work in. What I discovered is that the smallest usable stitch is at the 2.75 marking, and that by the time you get to the 4 indication the stitch length is large. I'll get dimensions soon.
I have since shortened the handle 1" and that is a nice working length.