Hi, quick summary of my problem. My Fuji Roubaix double has recently started slipping in certain gears but ONLY when in the granny ring. If I switch to the big chainring no problems whatsoever. Any idea what this could be...rear mech adjustment? What's also weird is only certain rings on the rear sprocket cause this annoying slippage.
I should also add that this bike has only done about 500-600 miles since new.