Having trouble getting 1071 chain to travel consistently up and down 1070 cassette smoothly. More of a problem coming down the cassette. Using a X9 clutch derailleur. I have one long cable housing that is fairly new and seems to be no resistance there. The shifter comes with the black coated cable. Seems like I've had trouble with those. Has any body else had this problem and is it the cable or compatibility of the X0 to X9?