I have replaced both wing mirrors with a second hand pair. They seem to be working find except when folding them, they are out of sync, so when one closes, the other opens. Tried various "techniques" to get them to sync like pulling the connector and putting is back on when they are same location and the trying to put it back on but they always end up in the different position. What is the proper way to sync them? Could not find anything in nanocom either?