Sounds like a good idea.
Brakes are all stock, other than using an 87 rear axle. MC and wheel cylinders where replaced a few years ago. I'm thinking I need to give the wheel cylinder another look.
I keep thinking I've got something wrong in the adjustment but with the drum able to slide on and off, I dont know how they could be adjusted too tight.
The spool makes it a bit harder to gett a feel for what's going on.
The spool might help actually, act more like its on the road maybe.
They should be adjusted till you can just hear or feel the very slightest drag so assuming there's no lip in the drum then they should slide on and off with a wiggle.
The bell cranks that go through the back plate are free?