All forward shifts are excellent. Little or no flair hot or cold with crisp shift.- - however, when cold when I shift into reverse transmission slips and does not catch at once. I let car warm up and no problem. Transmission has longer delay than my 400E and 380SL when shift into forward or reverse. Am I due for replacement. Car has 200K miles with good maintenance; and transmission fluid and filter changed 20K ago. Would another change be helpful and what adjustments might help.