2002 E350 Salem Koger conversion on leaf springs wanders. 118K miles. It always has wandered and is only a problem if I'm tired or if the wife drives. Everthing seems tight and Van is never "off roaded". I increased caster to 5 plus degrees and installed a steering stabilizer. That helped. I'm going to add some more tow today with a measuring tape on the tire. 1/4" toe in on the tread sound right? Anything else on these vans to look at for a slight wander?