I'm assuming that the u08 has a 126mm drop spacing? I'm trying to do something similar with a fuji s-10. Measuring the the rear chainline using sheldon's method gives me something like ~47.5mm (this is with a 120mm fix/free hub and a 1/8" cog with spacers)... My understanding is a 103 bb will yield a 42mm chainline if using the inner mount on a road double crank. So if your crank will be pushed out about 4.5mm, wouldn't this give you a pretty okay chainline? My problem with the fuji is that the bb shell is 73mm and all the cartridge bb's I'm finding are for 68mm shells.