Hey, I've always bee too busy to play around with TextFX before.
Most of the items in TextFX > HTML Tidy; don't work for me, except Tidy (most recent HTMLTIDY.CFG). I guess there must be a .cfg file you can download/edit, which gives you control over TIDY's precise behaviour.
Little time now, must eat, then prepare for car club event tomorrow. I'm supposed to be leading and unless I do some more planning and get an early night, we'll be well lost before lunch.