Hi all and well met!

I have an 82 Turbo Diesel Sedan I've been working on.
One of the things I've been working on a problematic 2/3 shift and it has me a little stumped.
The car used to flare and slip quite badly on the 2/3, sometimes not going into 3rd
It still does it when it's cold but will work better when warm but still with a fair amount of flair as a result of some of the stuff I've done

However it's still not as good as my previous 80 300d (which always shifted well and I was a little hard on it) or my 81 300TD turbo which shifts well with a slight 2/3 flare

Ist and second are both strong and the 3/4 shift seems good too
The tranny kicks down well too
There is some delay when drive or reverse is initially engaged

Here's the goods:
I've;
-Changed the Fluid, the filter and the K1 spring kit
-made sure the bowden cable was adjusted properly
-Troublshooted the vacuum system, replacing many of the rubber hoses and the rubber cap on the modulator, There seems to be adequate vacuum from the pump.
( I have a mighty vac and a vacuum gage)
- Checked and adjusted the VCV valve using the 2cm disc on the full stop pin and a vacuum gage
- Overhauled the 3/2 valve with new levers and hoses, the EGR is disconnected and nozzle is plugged
- Tried hardening the shift at the modulator on the tranny
(up to 3turns!) This helped some with the flaring but it's clunky now

So Now I have the VCV adjusted properly so it reads about 4.1 hg 10mm from full stop.
The modulator is turned in (clockwise)3 turns from where it was when I got it (I don't have a pressure gage but I think I'll be buying one to test it properly)

one funny thing it does is that if I disconnect the 3/2 valve and plug the line it won't shift out of 2nd at all, even when warm, it doesn't slip but it just won't shift.It stays in second

If I reconnect the 3/2 it will make the shift but with some flaring and all the other shifts are pretty hard (because of the modulator adjustment)

Any ideas??

Also I have a few questions about the 3/2 valve:

-Should it hold vacuum at rest? (idle)
Mine seems to open up and leak it as soon the throttle is slightly touched and the lever on the valve begins to depress.
- When I'm testing the vacuum on the fitting normally going to the modulatoron the tranny, there's decent vacuum but as soon as the throttle is only slightly moved and the 3/2 lever is depressed it immediately drops to 0
Is that normal??
- When the 3/2 is disconnected the vacuum seems good and the 3/2 seems to work well except then it won't shift into 3rd at all??

Aiiiiiiieeeeee!!!