Have a problem that existed once about 6 months ago then again today. I have a 2007 Luhrs 41 Open, with Cummins 635 Qsm 11's. Upper and lower stations have electronic Glendinning controls. Everything operates okay, then all If a sudden, the controls are operating backwards. The port would operate starboard & starboard operates port engine. Any idea what causes this? Could be detrimental in a tight marina situation.