Hi all. Was hoping someone mechanically experienced might be able to help me with my move to a shorter cage rear derailleur and quieter drive train. I've got a 2008 Giant Reign 1 which i've modified to have just a single 32T chain ring up front and still the stock standard 11-34T cassette at rear. The stock standard long cage SRAM x9 rear mech is still there but I'm looking to buy a small or medium cage SRAM x9 for a tighter ride. Can i go to small? Thanks for any help. Happy trails.