hi need some help boys n girls. i have a 2003 ford focus zx5. auto tranny. when i doa roll stop at a stp sign and hit the gas the car seems to shift hard it almost jumps just a bit. it also does the same when i slow down due to traffic and then the traffic picks up and hit the gas it bucks a bit. is this normail or this a tranny problem? brought in to the dealer threee times they say nothing is wrong. but it wouldn't be the first time they missed a problem.