Thermoquad tuning

Hiya folks. Doing a mileage build on a 360 and trying out a thermoquad. The book I got for Mikes Carburetor parts is a little vague on specifics of tuning and I’m confused about the throttle shafts. Does anyone know the amount the primaries are supposed to open before the secondaries engage? It seems like the secondaries come in super quick and no matter how much I bend the linkage it doesn’t seem the have great effect. Additionally the primaries don’t come 100% open. They stop at say 80 degrees unless I bend the linkage so far the it’s able to come all the way around and then it holds open some at idle. I’m a little confused lol. Any help would be appreciated.

Thanks!