The floppy disc spring is a freakin excellent idea, just installed one at back end of run-around.
Still gonna make the first point (is there a name?) manual off a lever.
Just noticed that (Bob) you have the bell crank directly attached to the point "slider" Ive attached mine with a short piece of rod. That might work better as the rod keeps jumping off the slider and needs a c-clip. However it does give some flexibility.
Joined the coat hangers together with an automotive electrical connector.