ive got a new problem with my tranny. when im accelerating onto a highway from an on ramp, i use the manual mode. everything is fine 1st thru 3rd, but when i put it into 4th the tranny shifts like normal, but then the rpm's fall about 250-500 after the shift then pick back up again. i know its not my foot coming off the gas because it will do it even if i push down a little bit more after the shift. the car feels like its slowing down for that little bit. no other gear has this problem. anybody else heard of this? i havent been able to go to the dealership yet.