Depends on which way the angle is off. If the caster is tipped +4 degrees, then ~2 degrees would get you back to +2. If tipped back (-4) degrees, then you would need around 6 degrees on the shim. I find my steering works well and the angle of the spring perch is set at 6 degrees (up in front). Easy to measure off the bottom of the passenger side perch (under the axle).

Last edited by 4Crawler; 12/05/06 05:29 AM.