BOB, CHECK YOUR ROLLERS ON THE REGULATOR TRACK,MAKE SURE THEY ARE TIGHT AND NOT WORE ON ONE SIDE. THEN CHECK THE UPPER ,TOP FELTS ON THE IN-AND OUT ADJUSTMENT(THAT HOLDS AGAINST THE GLASS, ARE THE IN GOOD CONDITION? IS THE REGULATOR ITSELF TIGHT?..MAN IF YOU DID NOT MOVE SO FAR AWAY, I WOULD BE GLAD TO GO THROUGH THE DOORS AND ADJUST THE WINDOWS.....SOOOO BACK TO YOUR QUESTION , THE ONE ITEM WIT HTHE FELT ON IT IS PART OF THAT KIT THAT USUALLY NEEDS REPLACED, THE ROLLERS ARE COMMONLY WORE.. IF YOU NEED ANY OF THE FELTS-OR INNER DOOR BRACKETS, LET ME KNOW.. I HAVE SEVERAL(OFF A 36,000 MILE REGAL)