Yeah, and thanks again for that write up on cleaning the evap fins... ( and more ) ... I use it all the time for instructional purposes...dramatic proof they need to go the extra mile...or why it is not the extra mile.. but necessary to get what they want out of their AC .

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1980 240d ,

chain elongation, cam marks reference:
http://www.peachparts.com/shopforum/showthread.php?threadid=10414

http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html

evap fin cleaning:

http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator

A/C thread

http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html