Should the tailgate go down slowly?

[TerminatorX5]

both tailgates on mine are going up and down relatively slow - the bottom one does not drop down like a lead foot on a gas pedal, but rather goes down in a "dampened" fashion, the top one needs to be raised to about eye level, and then it is going up on its own.

the only time it did not go up on its own, but rather started sagging, was in Moscow, after the local authorities had the car for "inspection" - given the fact that we had a 25 mile/41 km traveling limit from the center of the city, it was obvious that the car gained some additional, factory unsactioned electronics... lol...