Maybe new bearings?
No one except Dura Ace makes a 109 symmertrical sealed cartridge BB. It's as expensive (around $90) as the Sugino.
Most people on a budget or who want to run a sealed cartridge BB for less but that works just as well run a Shimano 107mm BB (which is what I'm running now) which seems to work just as good. That would be a 1mm difference on each side, but if my chainline's off, I don't notice it.