Brakes Dragging - Pushrod too long?

I'll start by saying everything in the brakes is less than 2 years old.

I just swapped to a manual trans, and now that everything is back together I notice my brakes are dragging to the point where it's very hard to push the car on flat surface. If I lift up the brake pedal just a bit, they fully release. It looks like the push rod comes out of the master maybe a 1/16" when I pull up on the pedal. I switched from the stock rod, to an adjustable one from Dr Diff to get a little higher brake pedal, I'm wondering if the rod is set too long and its causing an issue?

My setup is a 72 Duster with stock 4 speed pedals, Dr diff adjustable push rod, Dr diff aluminum master, front brakes go through a line lock and to a Tee fitting, then branch off the front calipers, which are SSBC. The rear line goes right to the rear which are Dr Diffs rear disk brake kit. The flex hoses are all braided stainless lines.


I do have a parking brake hooked up, but I unhooked it and nothing changed. It just takes an ever so slight lift on the brake pedal to release all of the pressure and allow it to roll freely.


The pedal is rock solid, I can't imagine there is any air in the lines, and the flex hoses have maybe 350 miles on them.