It shows as a lot ( don't know what the optimum should be) as our 7's are notoriously hard to get the self centering required for iva many have failed on this point so I guess the book works out that way to ensure there is some compliance
As I mentioned earlier I am able to shim mine and ended up with 1 x misalignment washer at the rear of the mounting bracket then the rose joint then the shims in front this gives me the trail required and I am happy with her now
Oh should have also said I am using mx5 uprights so can't be sierra specific sorry
Gary
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remember we are not mad just creatively insane
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