Ok, so I just picked up my 244 from my mechanic after he replaced the rear main seal.

As is mentioned in some other threads, the tranny cooling lines were rusty/brittle and rather than create another problem, he left them connected to the tranny. He said he wound up "creating a leak" which he repaired with a split rubber hose, some silicone, and clamps.

When I drove it home, the transmission shifts very rough, and doesn't shift properly---revs too high, and then I have to let up on the gas for it go into the next higher gear. (Prior to repair, this car had a very smooth transmission -- didn't even have the characteristic hard shift into second gear.)

This is the first time I have had this type of repair done to either of my 244s.

Questions:

I know something is wrong, but what? I assume there should be no "break-in" with this type of repair that these symptoms will clear up on their own, right?

The transmission fluid level is maybe 1/4 inch past full (hot side) on the dipstick, so perhaps he added too much fluid. I don't know if the dipstick is on any kind of a consistent scale---is 1/4 inch over full an extra ounce, an extra pint...?

Could the cooling lines be pinched or clogged from silicone he applied around the rubber hose?

If the lines are pinched or clogged, then other than the obvious inability to cool properly, does that affect the shifting? Particularly since the hard shifting was immediately evident before the engine completely warmed up....

Anything else to inspect?

Thanks in advance.