so I find out one of my neighbors has a beautiful 1982 240D, only 150,000 miles. It's a grey market car he bought from the original owners who imported it. He says a few thousand miles ago the crankshaft failed, so his dad did an engine swap with a 1984 California 300D. He said it had shifting problems, so I said to bring it on over. Holy cow! There were vacuum lines going everywhere, nowhere, and who knows where... (obviously none getting to the transmission modulator), an electric fan that runs all the time, and two temperature probes disconnected, though he says it still runs hot..lol. After spending a while scratching my head, I just re-plumbed the thing in the most correct manner possible. Instantly he had the smoothest shifting 300 I'd ever been in. The most unusual thing I saw, and what I have a question about was a line going from the ALDA to the main vacuum supply. I'm talking about a barb fitting on top of the banjo bolt for the line that runs from the intake manifold to the ALDA. Is this just someone's way of fooling the ALDA into thinking there's no boost? Obviously this was robbing most of the vacuum from the system, and he said there was a slight reduction in power after I terminated it, (small price). Anyone else seen this?