Since you're in "manual" mode, only one of the two buttons will respond to input at a time. Pushing any two buttons together will only activate whichever button sends the first signal to function. You must push one to whatever position you want, then the other to its' desired position.
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Richard & Judy Blackwell
Indio, Ca.
2014 F350 DRW 4x4 Diesel
2013 3402RL
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