I have not. I wanted to check everything else first to make sure it's right; however, when all fails, I will start afro engineering. What is your caster set at? I am seeing where a lot are setting caster at 4 or 5 degrees positive to fix their issues.Have you added any fender washers to the kingpin spring? I had wobble from day one, added a washer to each side - it was gone. The kingpins were never meant to handle large, wide tires - sometimes they need a little help.