I never did figure out the margins issue. Some of my sideloaded ePubs could have the margins changed via the KT and some could not. I think the ones I had converted with calibre worked and the non-converted ones didn't, but I never got around to verifying. Of course I was running a beta firmware rather than 1.9.5.

Yep, from what I've read today it looks like Borders creditors are pushing the judge to liquidate the company. I hate to see that--too many nice people might lose their jobs.