Quick question, Rich--what kind of media are you using to test by formatting to 1.2MB?
If they're SS media (as indicated by the position of the index aperture), your drive will probably barf if you try to access the disk as double-sided. We've all been spoiled by 5.25" and 3.5" media which doesn't differentiate between single- or double-sided. Try using the format capability in IMD to test things. --Chuck