I have a 90 Reatta Conv. The drivers window motor will siddenly start popping like a gear might be worn or something and the window will stop. With a lil help,, the window will resume its movement and then will stick again and the popping will start.. Has anyone else had this problem and should i be concerned about the linkage gears or is there an adjustment that can be made. HEELLPPPP Thanks Ray_n_la