I have a Sugino 75 crank with Surly Hub and EAI cog. Currently I'm using a Shimano UN73 110mm BB. I'm disatisfied with this BB. The spindle is asymmetrical and moreover, I can't achieve a perfect chainline with it. Theoretically, a 110 mm spindle should only throw the chainline off 0.5mm or so, which would be perfectly acceptable to me, but it looks to me like the square tapers on some of these BBs are minutely different, thus throwing the chainline off about 2mm more, apparently because I cannot get the crank arm to slide all the way onto the spindle.
Although I know it would solve the chainline issue, I'm hesitant to go with a matching 109 mm Sugino 75 BB because I'd rather have something sealed that requires less maintenance.
For all you Sugino 75 cranks users out there, what BBs are you using and hows your chainline? I'm thinking the best option is to go with a Phil Wood 108mm BB. The chainline of Phil Wood BBs are adustable 2.5mm either way, so it should do the trick. Does anybody have this setup or know of any other good options?