Checked my headresty again today. Since it was all the way in the UP position I pushed the button down and well the darn thing moved! Well moved down but wont move up now. I now have iut all the way down and it is stuck again! Bummer... Im going to try opening the seatback and looking at the motor. Is there anything I should look out for when taking the seatback apart in my 560SEL with leather and heated seats/.?