73 Manual Disc/drum Master cyl no residual valve

Took me a minute

You DO have 4x disks, right? Why are you worried about residual valves. Disk brakes should not have 'em

But I agree, at this point I'd say an adjustable valve.

I only got my car together for a bit this summer with the 4x disks (Versailles rear, 73/4 Duster front) and it seems fine with NO prop valve, but of course tires, etc, all affects this.

Yeah, its disc/disc now. Pedal is firm and the brakes stop just fine but don't "feel" right. Maybe I haven't driven it enough to get used to it or maybe I'm a little paranoid. When it comes to brakes, one almost can't be too paranoid.
I did confirm that the rears aren't dragging before I drove it. The only reason why I was concerned with the residual valve was because I didn't check before now. When I didn't find it I was confused as to why.
I also cleaned the proportioning valve when I redid the entire brake system but that was a few years ago. The valve system was completely frozen up at that time and the rears would lock before the fronts.