I just replaced a bunch of vacuum lines in my 87 300d with basic metric rubber vac line. The car now shifts too soft on all shifts, with a noticeable flare from 2-3. If I understand flare correctly, it is a racing of the engine and a prolonged soft shift, right? Well I wonder if I might have inadvertently eliminated one of those orifice thingys I have read about... seems like I have too much vacuum. I wonder if the vac orifices or some other vac adjustment have been messed with to increase vacuum and now I have eliminated a bunch of little leaks by replacing dry rotted cracked hoses so now I have too much vacuum and need to reintroduce some orifices or turn the vac down some other way? The car came to me with a new vacuum pump, so they must have had some problem. I also replaced my alda which was screwed up and the car seems to have a bit more power now so I don't know if the soft shifts and flare have anything to do with that but it seems since I was screwing with vac lines that must be the problem. I also noticed the vacuum control valve on the side of the injection pump near the back had a long crack in the rubber elbow vac fitting that sticks out the side of it. I tried to pull it out but it ripped and I replaced it with a bit of vac hose stuffed in the hole, seems to seal ok. Any input appreciated; I am going to go study my manual to try to find out about these orifice things.