Flyingiron Spitfire fuel valve

Since I got the updated Spitfire I have noticed I cannot bind a key on my Honeycomb throttle quadrant to turn the fuel valve on or off, it worked fine with the pre updated version and also works ok on other aircraft. Not sure if it is something to do with the throttle quadrant or something has changed with the update but it would be nice to get it to work again.
Any ideas how to fix it?
Also is there a possibility of choosing to have the external tank removed?

As far as the external tank goes, just remove all fuel for it in the pre-flight setup and it disappears.

what about the other two tanks. I got rid of the center one but the other two wont drop. I have them empty and fuel selector on outer wing tanks. Can I get these to go away?