Again reviving an ancient thread... But if anyone has had issues with the upper arm making contact with the pinion I feel your pain. I went back and forth with Josh from iro about the issue and finally set caster to 8.5 degrees to abolish the issue. I had driveshaft vibs but I was accepting of that. I assume my low lift height (3.5) and small tires (31) made the up travel situation worse. Anyways on to the good stuff. Josh informed me they made an improvement to the upper arm design. This week I am going to send him my arm and he is to send me the updated one. Kinda bummed my Jeep will be down for a week and for paying for shipping the original arm to them but beggers can't be choosers...
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