I like the Teflon tape idea. The have a Campy Mirage square-tapered crankset installed on a Mirage BB. I wasn't real happy with the chainline, so I computed the front and rear chainline in accordance with Lennard Zinn's repair manual. Long story short, I have sent off for a Chorus square tapered bottom bracket. The Chorus BB is 102 mm and the Mirage is 111. I suspect I am worried about nothing here, but is the nature of a Winter Build to spend much time staring at the work in progress, drinking beer, and pondering my next move. My options are somewhat limited, as there are not a lot of Campy square-tapered BB options out there.

If anyone chimes in that the Chorus square-tapered is different than Mirage square-taper, then I will just have to shoot myself! ASAIK, there is JIS and Campy, period.