I'm curious to see if the ISIS is, in any way, serviceable. I've always been told it isn't but that is usually coming from someone who wants you to drop $100 on a pretty new lightweight ISIS BB. Dave...I also have my old RaceFace BB that is completely toast (shaft play). I think it is beyond saving so I wouldn't mind donating it to science for some reverse engineering.
This is why my next crankset will utilize a bottom bracket with outboard bearings. You can service those bearings for next to nothing (pop the seals, flush out the old grease/grime, then repack with bearing grease).