Hi I have a 2000 Bonny SSEi that has developed a hard shift when changing gears in the lower gears at very low revs and when it is up to normaloperating temperature. It doesn't do this when the power is on, i.e hard accelerating. This is beginning to be quite the bump when changing, I was wondering if it could be a modulator valve or something in the throttle body has gone awry. Thanks for any help. Les.