The side windows move down unevenly (with respect to side to side); apprx ½ down glass guides on regulator snap off. Removed glass from regulator and tested motor - operation of motor and regulator movement normal inasmuch as speed and sound. Is there a procedure to repair/realign/tighten window movement and or regulator? Phil
the vetical tracks at the front and rear of the door can get tweaked, that might be what's causing your problem I'm having the same problem on both windows of my 318ti
