With the Saginaw, there is no synchronizer for Reverse. This means you will see wear on the reverse side of the synchronizer assembly (left) on any Saginaw that has seen normal use. You won't be using Reverse much anyway, so don't worry about it. But if you see the same amount of wear on the forward side of the synchronizer assemblies, they will need to be replaced. The synchronizer on the right side of this photo is still good.