Very nice setup. Another thing I forgot to mention is if you can reproduce the problem and it's in the rear and opening a bleeder does nothing. When you pull the drum look closely at the wheel cylinder pistons. If one is sticky when you hit the brakes normally the pressure will just move the non-sticky side but when you up the pressure by standing on them unless it's completely seized it will apply the shoe. then the problem is that the return spring doesn't have enough umph to return it. This is a very common problem on old cars because they use aluminum pistons with a cast iron cylinder. It can also be exasperated by lack of maintenance Because the dot 3 and 4 used in our cars is hygroscopic and absorbs moisture from the air and all the heating and cooling cycles. Brake systems should be flushed at least every 5 to 7 years to help keep internal hydraulic corrosion at bay.