I checked mine last night and I change up between 2-2.5K, and do so smoothly, without any hesitation, jerkiness, or ranting of the engine.
I'd strongly suggest you drive a different Mondeo to make sure it's your car that has the issue (which it does sound like) Have the mechanics at Ford not taken the car out? Surely if it was as pronounced as they say, then it would be obvious there was a fault?