I recently replaced a faulty transmission vacuum modulator on my '81 300D and immediately after I did so I noticed that it would shift WAY too early. I figured that the modulator needed to be adjusted so I tried that. No improvement.

Before I replaced the modulator it shifted very hard and very late with or without the vacuum line attached to it. That is one way I knew it was bad.

Now when I remove the vacuum line, it get the same early, low rpm shifts.

What gives?

Could the transmission have shifted when I removed the cross member that was supporting it? If so, would this cause this problem? I also can't get it to downshift, ever. I never had either of these problems before and they both started IMMEDIATELY after I replaced the vacuum modulator.

Any ideas?

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1993 W124 300D
-297K on the clock as I type this.