Leaking issues in my 200 4R - any gurus available?

So the local guy adjusted the TV cable firmer. I feel no difference in the shifts, but then I usually manually shift anyway. He was unhappy that 4th only comes in at 55 mph, and he thinks there may be a valve body issue with a spring installed wrong. He never did address the overheating issue much. He suggested I bypass the radiator and run directly through the cooler. I did that and it was okay for 25 miles. I stopped for gas and not a drop was leaking. The last 15 miles, however ... I got to my exit and I smelled transmission fluid. I got home and there was fluid everywhere. I'm getting pissed. I'm almost ready to drop the 318 / 904 back in it and sell it. Then I can fix the transmission at my leisure.