On my 87 300D how do I get the telescoping head rest to go all the way down? I took the two screws out of the seat back to get access but I was scared to pull the panel for fear of marring the upholstry, it still seems glued "in". One of the two steel rod posts has a blunt end, the other has a pointy end.Thats the side that catches, I tried using Vaseline and slamming it down, didnt work. The seat head rest wont fit a 6'0" --its postioned for someone 6'6"