Try these guys, they will also help you troubleshoot.
http://www.gdl-online.com/testproc.html
Good Luck.

__________________
Doug
'83 300SD "Old Gold" 170,000 mi.
'82 380SL "Green Machine" 190,000 mi.

Some days you're the pigeon, some days you're the statue... I'd rather be the pigeon!