This could have NOTHING to do with your problem, but I was telling my father about it, and he said my Mom's Mustang once had a funny problem that they thought was the transmission. Every time she was driving uphill the car seemed to loose all power, and was very sluggish, wouldn't shift, etc. It turned out that there was a small baffle in the exhaust system that was closing, and sticking closed (esp. uphill). It was essentially acting like a potato stuck in the tailpipe. With wet plugs I think you've got another kind of problem, but you just never know. (BTW- I had a '78 Corolla with wet plugs, and I ended up doing the head gasket, piston rings, bearing rod shells, valve seals, and temp sensor replacement...it was a lot of work, but not rocket science, and I felt MUCH better about the car afterwards.) Like all the other folks are saying, when all else fails, read the instructions...Chilton or Haynes will take you far.