as a wrap to this story..
picked up a UN55 110mm BB at a LBS. slapped it in yesterday in place of the stock UN26 122.5mm, torqued on the Origin-8 Trekking crankset, and voila, my chainline is now spot on dead center. on the middle front ring, its right in the middle between #4 and #5 (of 8). couldn't ask for better. all gears shift sweet, only a bit of FD/chain noise in the crossover extremes of both bigs, and small front plus smaller 2-3 rear, none of what I'd ever wanna use. chain is much quieter in all 'normal' gears, the machined alloy chainrings are just that much quieter than the stamped steel ones.
