As our, or at least mine, resident KIA expert by means of ownership, have this ever happened to you: Wife's '02 Optima has an electric antenna embedded in the right rear fender. At least once a week must "assist" it to fully open or close so I can then thoroughly clean it so it will work properly again. This has been going on since Day #1. The dealer says it is the way it is & KIA is famous for this. Hmmm..... Have you had the struggle and, more importantly to my selfish goal - found a cure?
Rich