Yup, blw, that's for sure.
If we can't find one of those Windsor prop setups, I am contemplating building a hub setup. I have a small machine shop at my disposal. Parts could be lathe-turned, so it wouldn't be something that could be made by the average modeler. With everything symmetrical, the hub design would (should?) be balanced... at least in theory

but we all know how that goes.
Even with buying the drill bushings and precision axle, it would be cheaper than the original cost of the Windsor balancer, though a lot more trouble to make. It could be mounted on my Dubro balancer...
Oskartek, back in post 28 you made a comment about my my mis-statement of the hole being off-center, you said that it was not perpendicular. I meant to comment before that yes, you were correct. That's what I meant to say - I should have edited my post better before hitting the Send button. This is a belated Thanks for stating that.
Bob