Modified Sweep example code to follow this sequence:
Ign off: valve open.
Ign sw on: sweeps left-stop, sweeps right- stop sweeps left back to open position.
Bike starts: sweeps right to closed position.
Bike drives:
0 - 6000 rpm - closed
6000 - 10 000 rpm - sweep where 6k is closed and 10k is open.