We've been going back and forth with Thor and Mercedes about the seats on our 2020 Synergy not working correctly. Today we learned that after all our questions Thor found an answer. It seems that when you move the seat up the back comes up too and moving it back the seat does the same. That is because the Sprinter was made thinking there is a wall directly behind the seats. There is a way around it and the Thor Rep sent us a sheet on how to correct if we don't want to take it in. Bitching continuously helped. Now on to our radio problem that Mercedes says isn't there problem.