Hi, I recently had my 2 batteries changed and my windows tinted..(91 850i) now it seems that the windows are no longer going down when the doors open that is to say the doors are closing directly on the windows..I almost broke one...Now I have to open the windows before the doors are closed and then close the window once the doors are shut...Someone mentioned Re-Syncing them anyone know how to solve this problem and if Resyncing is the answer...HOW??? please respond!Oh Yeah!! and what are DK motors?