despite new coupling it still rubs when starting

a question, who fights with this problem as well. when you start it rumbles from the drive train. until now the complete differential last week was renewed Wednesday the clutch and nevertheless it rumbles when you drive. especially at trailer operation. in the early year when the tire change in my old screwdriver booth we talked about it and the master saw the time and meant that in the push piece at the gear side where the cardan goes in the side play would be quite big. I told you about hyundai and he said that there is now a new fat what he would put in there and this game is normal… my car has now 20000 km down and this ruffling from the first day on. now there is a new premium on the farm at my dealer. so I drove today and check if he also has a side game. of course not. so who has this with the ruppelei also with his dare, can tell me something about it or give me a tip. me s Does that mean because I have to think about what will happen in thousands of kilometers. a ford sierra with 200000 km does not drive a new car, almost new, right?