Balancing a Scat cast crank

RedB. said
so these 408 kits that are sold as balanced kits, need balancing ? I have been looking at the Scat 360/408 kits and some are sold balanced and some not balanced, so if the kit is going to need balancing why spend extra money on a kit that is balanced.

You don't need to balance the kits sold as balanced. Some people prefer to have stuff balanced locally, and some people are ok with having scat balance them.