Ive been having the hardest time with the brakes on my truck. I replaced all the wheel cylinders on it and the MC, but is hasnt fixed the problem. I've put thousands of miles on it the way it is, but it is WAY too dangerous. I have to pump the brakes a good 3-5 times before i get pedal pressure. It has brake fluid in it, and I've tried bleeding them also. I pulled off the passenger side brake drum and the shoes look like they have plenty of meat on them. i had them adjusted once and they were good for about 1000 miles, but were gradually getting worse that whole time. If anyone has any idea of what this problem could be I'd love to hear it. Thanks, Ken