Well this weekend the Missus and I took a trip down the backroads of South Texas. A 2 hour drive to the beach. The transmission responded well all thoughout. On the way back I noticed something strange though, the car seems to love 2nd gear. It holds it until 40mph (2.78 rear end). Once in third gear if the car even goes to 39mph for a second the transmission downshifts to 2nd... if I press the gas slightly it will upshift to 3rd. It will downshift and upshift a couple of times in a short time period as long as the car is around 39 to 42 mph. I think this has something to do with the vacuum modulator.