Yes, that would probably be easier, but more expensive and far too easy

It opens the throttle using a bellows - similar to the recirculation flap. I'll take a pic of dads setup when I get around to it. Come to think of it...I might just raid his kit....sure he wont miss it

I'm not sure the brackets, etc, exist to fit it to the carb, so this might all hvea to wait until I have the ET fitted.
cheers
James