ok Chris Brandt of Van Dyn Hoven Automotive Kaukauna WI says,

Because of the fluid viscosity in the crossfires manual is very thick (regular fluid NOT synthetic) combined with Daimlers low tolerances. this is normal and a common occurrence and once the heat from driving and multiple shifts builds up, shifting becomes much easier. Which is exactly the case of how mine reacts up here in Wisconsin.

a lot of that is common sense.
never bothered me too much.