i have a 72 auto type 3. gear change from 2nd to 3rd, the car really over-revs. all other gear changes are smooth. any help would be much appreciated. don

take off the line from the vacuum modulator. does it have ATF in it? if it does, you need a new modulator which are hard to source. try http://www.thesamba.com 

if not, or in the meanwhile while you search for a new one try unscrewing the little valve inside the modulator with a 4mm allen key. try, 1-2 turns.

right on Kaiisons

I've found that on occasions the auto lost drive going up steep hills. It was a hint and I filled the auot up just over full which is just right for perfect operation. So if your auto is a little low?

And that small screw inside the modulator is likely your best ebt for adjustment. I found my auto "hunting" between second and top at 50-60kph. Screwed it out a few times and test drove it probably 6 times before I got it right.

And just for interest, my flex plate was loose when I first got delivery of my trike. I reckonmy auot was hunting in its original type 3 VW and over the years caused those 10 rivets to loosen. All because of a simple adjustment.

Yeah after installing my dellortos mine is shifting a little bit hard 1-2 turns out and it is smooth again.