Slightly confused as to tranny issue.here goes...

been following the tranny thread here and decided to see if I could fix the shifting issue I have.hooked up gauge and checked vacuum....about fifteen at idle.since it was shifting hard i bumped it up until shifting was smooth.worked well but unfotunately the final shift(4th?) still clunks pretty harshly.right now vcv(? top of IP) is set to about 23lbs vacuum.the line to tranny holds vacuum.what would cause that final shift to be so harsh?and why after just a few minutes of driving does it go away?
also....

Having never ridden in a 300D until I bought one I have no baseline comparison for things like ride height,highway vibrations etc.
So here is my question regarding that.I will be in the DC area from the 19th to the 23rd of this month and was wondering if there was anyone in the DC area that feels that their 300D turbo is in good mechanical shape and would be willing to take me for a ride so that I can have a comparison to mine.If so please send me an email with a way to contact you upon arrival in DC.thanks very much

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1984 300D turbo 155k

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