I could only roll down my driver side. opened it, saw how simple it was. put got both to roll down, put it together.. both wouldnt roll down. I could see how the copper slates that control were kinda burnt and got VERY hot if you cross the pos/neg wrong. I don't know how it went bad, but is there a way to refurb it without spending $200+ to get it from a online part seller? anyone had good experience with this?