91 300CE has an apparent leak of tranny fluid.  Had the trans cooler lines
replaced recently and think the leak is in the pan.  What's the best way to
fix this?  Car also jerks forward when I put it from P to D or any other
gear.   A sign of...?

Also perhaps related, I've lately been noticing a burning smell from the
underside of the car.  Does not smell like burning trans fluid either.. not
gas.  No sign of it burning oil.  What else could it be?

Thanks!
Danny