Good call danny. The list is a good one. Since the unit came out of a working truck, you can cross off most items.
1. check the adjustment of the rear drums, and fronts if they are drums. If you lift the tire, and spin it, you should be able to hear the shoes rub a bit.
2. then, bleed the brakes, again. to get all the air out, you will to push about 10 oz of fluid through EACH corner. 3 to 4 oz at a time, lf, rf, lr, rr, do this rotation 3x. - bench blead the master fisrt - you can do this on the truck with two hoses.
