1984 300TDT with 319K.

Symptoms - Shifts OK between 1st and 2nd with a slight clunk. Slips when going from 2nd to 3rd, much like a mis-shift on a standard transmission, but then goes into 3rd. No problem from 3rd to 4th. Moderate clunk downshifting. Clunks seem to be more noticeable than before the problem appeared. This happened all of a sudden. I had a significant clunk problem a few months back, which was resolved by replacing a 2 inch piece of vacuum line.

Does this appear to be vacuum related? Or do I need to look elsewhere?

I will be checking out the monster thread on this issue, but thought someone might recognize this and speed up the process.

Thanks in advance.

__________________
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1978 300CD
1985 300TD
1999 Land Rover Discovery II
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