I don't know why, but I think my transmission is possessed or something. I cannot seem to get consistant shifting. Occasionally I get bad flaring (moreso under partial throttle), and stacked shifts between 2nd and 3rd (will shift into 2nd, then immediately into 3rd). It seems to be worse after a several hour drive. I have 10" of vacuum comining out of the VCV (vacuum control valve). I also turned the screw on the blue amp all the way in. I've adjusted the bowden clockwise, which did seem to raise the rpm points where it shifts under full throttle. I've also turned the modulator adjustment clockwise about 4 full revolutions. One question I have about the modulator adjustment is does it only work for 360 degrees of rotation? In other words, if I rotate it 1.25 turns, does that only translate to a .25 turn adjustment? Or does the more you turn it, the more it adjusts the vacuum?
By the way, the transmission was rebuilt not too long ago, not sure how reputable the shop was. The fluid level is correct, and is clean. Any ideas what else I can try? I am almost tempted to pull the vac line going to the tranny, that should firm it up!

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87 300D - Running on Veggie oil; 260,000 plus miles; Original #14 head

After adjusting the VCV to put out 10" vacuum at idle, I drove it today and realised the pedal only has about half the travel that it used to. Does this mean that the VCV is bad? By following the factory guidelines of adjusting the VCV, I don't get anywhere near 10" at idle. Even with it adjusted to this setting, I am still getting very soft shifts when warm. It seems to be fine when cold though. I guess my next step is to run a line into the cabin so I can see the vacuum while driving.

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87 300D - Running on Veggie oil; 260,000 plus miles; Original #14 head