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I installed a DJM 3-5 loading kit, axel flip notched frame ect. 2005 Silverado standard cab long bed. All is well with the parts and install my problem is I have a vibration under excelleration that starts about 55-60 mph. Just cruzing at hwy speed you don't feel it until you accelerate or an incline in the road. I have the drive yoke from the tranny and rear end yoke at the same degree, parrel with each other. Every pic I see about pinion angle shows them parrel. But it also shows the drive running "down" hill to rear ended. My drive shaft I guess because of the flip kit and 5 inch drop now my drive shaft is going up hill to rear end. Any suggestions? I would like a degree or something presice to do and not like some have told me. " just move it till it stops"! I'm very close just wore out on trying to figure it out. Thanks