Another point. You may be able to get away with far less ether. Throttle response in car engines is primo. Over the years, I've found that engine timing, porting and factors OTHER than throttle design have a lot to do with good throttling. Those that make car engines also know this I'd guess and along with two needle throttles they seem to have nailed it pretty good. That just may translate into the possibility of using much less ether than we're accustomed to.