Has anyone had any experience with what looks like a black plastic piece extruding from thier power seat rail? It appears to be part of the track that the power seat rides on. The strange thing is that it is sticking out from my Tundra (2007) seat and from my wife's Lexus RX330 seat. Same piece. If I am having trouble from the two vehicles that I have, I would find it odd if no one else has experienced this!! Any suggestions?