Has your husband made any comments about the Roubaix on fast descents? I've read some comments on-line that concern me about shakiness on fast descents (40+ mph). Now, I am not planning to go that fast downhill

as I get a little scared at 30 mph, but I'm wondering if that is a fact about the Roubaix CF frame. Yet, so many love this bike that if that were a common problem then it seems we'd be reading a lot about it.