I got an old road bike for commuting and i dont like drop bars so i put an airwing on it. i have downtube shifters and thought i could just get an adapter, run cables up to the bar and put on some rapidfire shifters, but I found that they are designed only for mountain bikes which are of a different diameter. Does anyone know of a usable shifter that will fit onto a tri-style handlebar? I dont want bar end shifters because that is where my brakes are. I would be OK with "modifying" some rapid fire shifters if it was an elegant fix. Thanks!