The midland is working pretty well. The power piston moves free on the bench, might be a problem in the control circuit - the cost for proper rebuild kit, the acceptable function of the midland has killed my interest in messing with it more. I don’t expect that even if it was in proper working order any improvement to braking power.
Talk about speaking to soon... Thursday the main rubber diaphragm of the Midlands power piston developed a tear. Swapped the Bendix back on. I have discovered that first time I installed it I had the vacuum source air intake reversed, so it wasn't even working at all. Second when they are installed correct, the brakes are full on. Seems I've got a problem in the control valve admitting atmosphere to the back of the unit and/or not administering vacuum to the rear. Now to decide which one of these boosters to concentrate on getting fixed.
PS: I might have patched the ruptured diaphragm with a bicycle inner tube patch - stay tuned if I decide to put it back in.
