I am building a road bike from a used carbon fiber Pennarola frame. Some components such as wheels and crankset have been transferred from my totaled roadbike. Next step is to install brake/shifter system. Any recommendations that are compatible with Shimano derailleur? Someone told me that there are a few models that incorporate a "micro adjustment" or partial shift to avoid noise of chain rubbing front derailleur in certain gear combinations. If true, which models have this feature? Are the modesl with carbon fiber levers materially lighter? Thanks.