yaw settings changed or broken?

[AcesHigh]

have not been able to participate in the last few updates but just tried running it under the latest and I can't make yaw work anymore.   I'm using G27 racing pedals and rudders, used to be I could depress one and the other would automatically map, now it only accepts one pedal.  to keep the rudder center I'd have to hold the single pedal half way down.   How do I get this mapped back to two pedals?