I am having trouble with the power seat recline in my 91 M5. It appears that on both front seats, the in board recline mechanism does not move causing the seat to twist. The recline mechanisms seem to work when the seat is reclined, but not when the seat is being brought more upright. Now I have the passenger seat stuck at full recline. Is there something common between the operating mechanisms for both front seats that have caused the in board recline mechanisms to not work? I am think there may be an electrical problem here, not mechanical. Any help would be appreciated.