Went to adjust the mirror on my 97 el and it only moves up and down and not side to side.or in /out if you like.When presssing the control a faint whirring can be heard but little else happens.The glass seems loose when pressed in that direction as if somethings come adrift.Is the only way to get at the gubbins to try and prise the glass out?Is it glued to some sort of operating arm. The Fiat repair disc gives no repair info just the details of taking ot off the door.New one someone said was £300 Gulp...