Going manual is a great solution. Did this on my '80 CD several years ago to finally be rid of the curse of the evil servo. Just swapped over the entire hvac cabinet, controls and wiring from a 240d parts car. Wasn't so bad - looks a lot more difficult than it really is. The results were worth the effort. With the dash out and the cabinet removed you have great access for adding soundproofing, too. Recently I complimented the upgrade with Rollguy's Sanden package; couldn't be more pleased (a/c is a major priority around here!). Be sure to check out the heater coil before you put everything back together. -- Ch