Wow, thanks for the education! I have have owned everything Burton, EXCEPT for that! Rare indeed! I see why you don't want to part with it.
I've actually been working on a plan to take a 7° wedge, weld up the bottom of the threaded holes for the bindings on the insert, drill them deeper & rethread, then machine both the metal insert and plastic down to 3°.
Where are you at in Idaho? I grew up in Idaho Falls.