I mix 100% spoilerons on my Funtana. It works great for elevators like you said. It also makes for an awsum wall.
At the bottem of your fall on that elevator, blip the throttle to make the nose stand straight up and go into a torque roll.
I also use the mix to do waterfalls. It wont waterfall without them. I dont know about the spring loaded switch. It seams like a lot to do when your flipping it around. Are you holding it with your middle finger or what?
David