Cool!

Speaking as a fellow Dual Drive user, that clicking in your bottom bracket may actually have been the same slightly misadjusted Dual Drive that you think accounted for the dropped chain. When it's off a little, it feels like that.

I settled on these for the bottle cage mount:

http://www.lickbike.com/productpage....B='3242-00'

I tried several, and they're the best I've found. Because the stem is in line with force transmitted up through the wheel and fork, I still lose the occasional bottle on bad bumps, but at this point I attribute that to not having bothered to put any industrial velcro dots where they'll keep it from happening.

I just switched to my summer tires, which are Primo Comets. How do the Duranos compare in terms of speed and perceived resistance?