In my case, I unfortunately managed to kill the motor in the process. Maybe I broke a connection when separating the grip from the body or I flooded it with too much lighter fluid when peeling off the leatherette from the bottom of the grip. I may look into this at a later point as the motor is to nice to discard it and it's also against my standards for myself to let the story end this way. At least I have to give it another serious try and really get to my limits of competence before I give in.