A few questions related to upcoming upgrades...

1)Has anyone ever put a brake on rims with unmachined braking surfaces? Rubber on powdercoat is not as affective as rubber on aluminium.. but if you have a brake thats only used as an E-brake, how bad can it be?

2) Do DA BB's (7700) come in different lengths? If so, with DA hubs and cranks, what length spindle would I need?

3) 240lbs on high flange hubs with deep V's, 32H, double butted spokes... Are they gonna SPLODE?

Also, I posted about this in another thread, but where can I find a mutant quill stem and nitto 021's or 019's in 40 cm or less widths?