Somethings don't mix and two of those are Clydesdale and lightweight parts. Only thing I can relate to you is that I have a Tandem that is ridden agressively offroad. We have to use a lot of Downhill spec parts on this bike as "standard" quality does not stand up to the punishment.

Now if there is a Top Downhiller using C.F.Bars then find out what he is using and then empty your wallet to get the same pair that he uses.