That is a lot but as long as you have plenty of thread engagement it shouldnt matter. I will confess I personally have never used one of those shafts though. If there are threads past the bolt and the car drove nice, i would let it ride. If your shooting for more negative camber for some kind of track racing then I would get it on the machine and start by adjusting the shaft with a few shims. Then remove or add to dial it in where you want. Set the specs in the machine to what you want, and it should get you very close.
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