This is on a 1985 300D California with 722.4 transmission.
I recently had to replace the ring gear on my flywheel because of bad starter. I installed a new starter and new flex discs while I had everything apart. I finally have everything back together and the transmission is slipping very badly. So much so that reverse will barely get me out of my driveway. Forward is just as bad. Fluid level is good, I had to replace about a quart from spillage.