That is the correct chart for your engine.

I doubt the accuracy of your feeler gauges are causing the problem...

When you adjusted the valves, did any of the valves turn?? There has been problems in the past with burned valves and when you turn them they no longer seal against the head like they should... This is sort of a rare occurrence, however it could be the issue. To prove my theory to be valid you will need to do a compression test, and then a leak down test on the cylinders with poor compression.

I feel you should dig a bit deeper into the GP system first.... simple things come first.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg