Here's an update. I just got a pm from someone on the forum and thought I'd share this offer.

My transmission is now probably the bast part of the car. And I haven't had any issues with it so far.
I may have all the parts you need to get your valve body refreshed.

I actually have a 722.6 valve body that is refreshed. So I can send that to you assembled and it would just be a swap and I assume a few hours of work.

If you decide to get my assembly, this is what you would get.

1. Used Cleaned valve body
2. New sonnax valve overlap kit installed
3. New pressure spring installed
4. Tested solenoids and 1-2 gear solenoids swapped with 4-5 gear solenoids. All solenoids tested for resistance.
5. New conductor plate
6. New harness adapter for the conductor plate
7. Gasket and filter kit
8. Dipstick tool
9. Lock pin for the filler tube
10. Washer for the drain bolt in the oil pan.
11. Fuchs transmission fluid - 6 liters (you may need up to 9 liters if you decide to drain the torque converter. I didn't have the drain bolt on mine)
12. Plastic covers for the solenoids
13. Magnet for the oil pan

And that would be 500$ shipped.

The reason the price is high is because of the valve body. They sell used for 300 on ebay.

If you decide to rebuild your own valve body, than everything but option 1 in the list will be 350 $

If your gears are slipping than the refreshed valve body will not fix the issue.

Also, you may have the transmission trouble codes in the module that need to be erased. You'd need the MBstar tool to clean the error codes and reset the adaptations. The tool will also help you check the transmission fluid level since it's very sensitive to the temperature.

I have the tool and could rent it to you if you leave a deposit. You can give me remote access to your laptop and I'll guide you. The deposit will be 400 and I'll charge you 20 $ a day to rent it.

I currently have 1 unit for w140 and 1 for w210