Hi Chaplin,
The bottom adjusters are not that difficult to adjust and only required when you replace the shoes. Regarding arcing, You can do it yourself by chalking the shoes, sanding with an electric sander and then checking again. The nuisance is mounting and un-mounting a few times. I wouldn't do this sanding/grinding with the old asbestos linings!
Brake adjustment shown on the pdf attached. Edits are mine.
Glenn