Jumps when my voltage rises
"I just bought a complete nx 12v transmission from probike. The only problem is that the shifter jumps out of 6th gear. I manage to shift up a gear by accompanying the derailleur by hand, otherwise it jumps. So I completely disassembled and reassembled the shifter to see, but the fault persists.... (I didn't have time to send it back under warranty and now I think it's dead) In short, I'm disgusted and ready to buy another one..."
