Jekill&Hyde to Nightster – cable trains off

Hello forum, I’m new here and have been driving a 2013 Nightster with JuH system for a year. For a short time the regulation did not work anymore. I had to find that the trains no longer sit on the rollers that move the caps. I see at the roll of the rear pot a depression, in which usually this maggot screw, which must be attached to the rope pull. The (I call it) “case”, through which the train is led, dangles only on the rope, I can a Inn This means that the pull is fixed with a maggot screw. This maggot screw is obviously missing. Furthermore, I wonder if this shell simply has to be inserted into the groove in the roll and held in place by the tension of the bowden pull or otherwise it has to be fixed there somehow. – How about the fixation of the shell, which is attached by maggot screw to the pull – is simply inserted into the depression in the roll or other – Where do I get such a matching maggot screw? – is it correct that I have to find the servo in order to release the train there, in order to be able to guide it through the sleeve? Or do you get a suitable maggot screw for the pod? Unfortunately I have zero documents to it. On Wednesday a friend comes to help, who is also riding a motorcycle and knows very well with engine and transmission technology, but also has not installed a flap system. Thanks in advance!