Good day to everyone. I’m working on my 68 XR7 8" rear differential. It had developed some whirling noise. I’ve purchased as new set of Yukon gears, carrier bearings, pinion bearings and axle bearings and am going through the assembly process but am finding contradicting information on pinion bearing pre-load and carrier backlash… Would someone have the Ford manual to advise me what these specifications should be please…