When you did a shaft learn, did it throw any faults after the learn?
If not then your shaft setup is correct.
Have you checked rope slip through drive display?
If that checks out ..
Have you checked your brakes?
If that checks out…
I would change the CCBN.
If you have changed the cigar switches, magnets, and tac then the only thing that makes sense to me is to change the car top board since that’s what’s transmitting the signals to the controller.
