I'd expect that might be "common" on panel/burb bodies due to the steering column being fixed to the frame - as the body mounts age and settle to allow wracking that would stress that mount point .... that's part of why the panel/burb bodies have different bracing than the pickups in the front and front anti-sway bars .... at least on the later series, the AD's may have been the 'learning experience'
Bill
