This is a sample guest message. Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
The black rollers are usually the tight ones, the white are loose. You want the black rollers to be on the same side as the proximity switches. The purpose of that is to maintain the proper air gap with the flags. The white rollers allow for any expansion or contraction of the rails.