My 2002 M3 has 80K miles on it and about two years ago the SMG started randomly not shifting on command, with the display blinking the selected gear. I happens in in any gear sequence and without warning. It will happen more frequently if shifting above 4500 or so RPMs. It won't happend for days and then it happens and can happen more than once on the same day. I wait a up to 5 seconds or go up a gear and it will engage. Quite unsettling at times. Dealer looked at it over two years ago and said I needed a new SMG. I've been living with it since, not a big deal, but its keeping me from trading or selling the car for a new 535i. Any suggestions out there?