Ive been following this thread and just want to ask ..did you replace the rubber flex line that goes from the frame to the rear axle???...when i rebuilt my system and drained it, the fluid ran outta the rear lines quicker than my ExWife cashin the support check but when i went to bleed the ALL NEW system other than that rubber flex line i encountered your same probs ..coul not get fluid to teh rear wheel cylenders ..found my flex line had collapsed inside and was junk...replaced it and had brakes in 15 minutes.
Tim
