Use blue loctite on your drive-side cup, and since you're backpedaling, you may want to use it on the non-drive, too. Sugino French BB cups on ebay buy it now@ $20 delivered. Lots of choices in spindle length, too. I bought a Sugino 110mm, good for many FG & SS apps pretty cheap. Use loose balls for added life - toss the retainers.