Well i took the truck up to bakersfield and had my pump rebuilt. They only charged me $780. That was for the r/r and the rebuild, so i was happy about that. I am glad i took it in. When the tore into it the found that one of my plunger return springs were broke in half!:--) . They turned my pump up 10% over stock and i can honestly say it is running like a Raped ape. Before the rebuild i could never come up the grapevine on I-5 from bakersfield as fast as my foot told my truck to go, i would be lucky to make it at about 65. But on my way home i went up it just fine pasted everyone that was goin under 70 and if i wanted still had alot more to go. I am very pleased with the power and performance i have now. Anyone in the area i strongly suggest giving the guys at Diesel Power Systems a call. There number is 661-399-5500.