OK, I'm about to be getting a new Catrike Road in, but it has the standard long cranks on it... think they are 165mm or 170mm. I've been doing a lot of reading that the 145mm-153mm are really a better range for the cranks for most people. The one thing that I haven't been able to find from my research (and I don't have the trike here yet) is whether you have to replace the entire crankset for shorter cranks or if you can just replace the cranks on the FSA crankset that is factory installed. If you have to replace the entire crankset, then I'll be holding off a while as the $3200'ish that the trike is running takes care of my "play budget" for a short period of time - and I can live with the longer cranks till I rebuild it. If it's a simple matter of replacing the crank arms themselves does anybody have any suggestions on where to obtain them from?