Upper Derailleur Pulley
I have an 11 speed medium cage derailleur, 11 speed 11 to 32 cassette, 11 speed shifter, etc. I have 3 chain rings. I can not keep the proper distance between the upper derailleur pulley and the cassette gears when shifting between the middle ring and the small ring. The small ring is 33 and middle is 39. When I adjust for the proper clearance in the middle ring and shift to the small ring the upper derailleur pulley rubs on the cassette gears. I'm wondering if I need a long cage derailleur? Any thoughts?