Before the reverse failed the tranny worked fine, except the slow reverse engagement, but that was due to a rapptured seal I assume.
When i got the car about 3 years ago, I changed the ATF cause it was burned. Took it for a drive the next day and I had a slip in 4 gear 2 or 3 times. Came home and added Lucas transmission fix, after that had no problems at all, just a little kick going from 1 to 2 gear.
On rebuild:
- Valid point, but Front pump didn't show any wear or anything abnormal.
- Modulator valve seems to be OK, no vacuum leak, no oil coming. Transmission had no problem shifting before the rear clutch failure.
- No rear pump installed.

It feels like there's a big oil leak somewhere. I might have messed up the valve body, i'll have to take it apart and check if i got all valves installed in correct order.
Im going tomorror to a wrecker to pull a transmission from a 1995 C280, and i'll take the valve body apart to compare to mine. Hope to find the problem.