Originally Posted by Glennie

... a hesitation to shift into higher gears from 1 upwards to about 6th gear. It has become gradually worse to this point. Now almost every one of those gear changes requires going up two gears and then back one to get the next sequential gear. E.G. changing from 2 to 3 requires changing from 2 to 3 and immediately changing to 4 where it shifts to 4. Then changing down to 3, which it does correctly. This is with the front large chain ring in use. When using the smaller chain ring, the gears shift ok, not perfectly though with some hesitation.