Regarding the reports about the maintenance of the drives I finally decided to take a more convenient way.
The „Beutepanzer“ in my worksop got 4 „bullet holes“ on each side of the rear armor plates with 6 mm dia.
That provides direct access with the hex allen key to the mounts of the drives.
Adjusting is now a real fun and the armor plates never needs to be removed.

To cover the damages the refurbished Beutepanzer got additional armor plates in B.A.K.P. 20 to get the tanks back to service.
To sheets of steel, a few rivet heads and some neodymium magnets did the job at my model.
Maybe for British tanks the holes could be covered with some painted and weathered adhesive foil.
Hope this could be an inspiration.
Regards
Oliver