I agree with Henry - and someone posted on your other thread about using a dead perch.

We've used the Deuce Factory adjustable spring perch, and an adjustable dead perch on the opposite side for at least 25 chassis.....works perfectly and MUCH cleaner looking.

If you get the adjustable one and use it with an adjustable perch you can adjust caster with no spring bind.

http://www.deucefactory.com/index.as...ROD&ProdID=111