I also told you many times that NCM did a mistake with the rear brake, confirmed by other experts I talked to, also with the local repair shop. They put the plastic of the hub motor is in the way so that the inner adjuster pad cannot be accessed while you're supposed to for fine adjustments (as written on the Tektro's manual). Yes the NCM manual doesn't mention it. And yes you can cut your own axle but still the space is too tight and visibility limited
The official NCM way is simply wrong, you should never use the barrel adjuster only.
SO I asked you if swapping that brake like you did could make the inner pad adjuster more accessible to make things much faster and easier. But no, we have to do as we the owner's manual said.