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Would not enough pre load on the pinion, show up as forwards and backwards movement in the pinion? Would it be noticable to the hand?
I would have thought the same but I couldnt feel any play and finally put a dial indicator up to double check, axial play was only 0.002inch mixed with around 0.002inch lateral play. So not a great deal especially in a rally car but enough to cause a very similar vibration whilst on transport stages to what has already been described. I have mentioned this bit of preload advice because I believe it is often overlooked. Thats why it took me so long to eventually find the problem in my rally car. I am not saying that this must be the problem vibration we are all trying to solve but all the symptoms apear to be the same.
Transfer
