I have been looking at Controllers online and noticed this comment at the bottom of the page.
The Controller Quad Rears are only available in the 1/2 in. tang, for 3/4 rear boxes you will need to purchase the Future Fins 1/4 in. Shims
Do all Controlers need these shims for the rear fins or are there different size Controllers. I'm assuming all Firewire Future boxes are 3/4.