Thought I'd bump this post of mine from several years ago to update my experience with external bearing bottom brackets on frames that pre-date external bearings:
1. My 2001 Gary Fisher Hoo Koo E Koo Disc - Took it to one of the best bike shops in the Boston Area (Belmont Wheelworks) as a stripped frame and they wouldn't take my money to face my bottom bracket. They claimed it was faced at the factory and I could just install the Hollowtech crank. I took the frame home, layed it on a linoleum floor and used a single-edged razor blade to take the paint off the face of the bottom bracket and then installed the crank. Three years later, no problems whatsoever.
2. Bought a 2001 Custom Titanium Spectrum frame and paint-matched Reynolds Ouzo Pro fork about 2.5 years ago. Bought an Ultegra SL crankset and Chris King bottom bracket and headset. Didn't even bother checking with the LBS this time as I know Merlin meticulously faces Tom Kellog's frames after welding them. Layed the frame on the kitchen floor once again and used the single-edged razor blade to take the maroon Imron paint off the BB faces. 2.5 years later, no problems whatsoever.
Last edited by pfweeks; 09-10-11 at 11:38 AM.