Check to see if there is a washer Under the valve on the trans....

Not so long ago a friend had issues with a trans that had been re-built that would not kick down...

There was a copper-washer under that valve causing insufficient movement of the plunger in the trans...

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http://i190.photobucket.com/albums/z...0TDnoplate.jpg

Alastair AKA H.C.II South Wales, U.K. based member

W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

W114, 1975 280E Custard Yellow,
-Great above decks needs chassis welding--Really will do it this year....