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I suppose air in the lines could make it pull.
I added some extra positive caster to the driver's (left, U.S.) side to correct a mild pull to the left. I did it by adding an extra 3/32" washer under the upper rear a-arm bolt mount.
The stiff steering is probably not caused by alignment. I fixed mine with new lower ball joints. Less caster should give lighter steering, but I don't think yours is excessive. Maybe steering box need adjustment. Never done it myself. There are recent other threads that discuss that. May need idler arm bushing.
I actually have doubts about the precision of alignment measurements on a 30 year old car, unless the entire mount system was aligned on a rack. Even then I suspect these cars may flex a little unevenly due to age.
I like my cars to pull just slightly right, if anything, because I like the left (fast) lane here which is very crowned to the left. I also like the rear suspension aligned slightly left, which puts my personal center of gravity more toward the middle of the car, but that might all be my imagination. 250 lbs in a 2500 lb car. I think it matters.
I'm pretty happy with the alignment now, except for some mechanical concerns. The angle at which the bolt head hits the crossmember may be a little severe. I rounded the underside of the bolt flange (hardened 7/16 flange head machine bolt) so it would mate more smoothly with the crossmember, but I have yet to taper the washer so it doesn't bite the a-arm bolt.
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'74 145e T-5 'Orange Alert'
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