the most important adjustment you make with the sunroof is at the motor, the way you adjust the travel of the sunroof is take a 3mm pin insert it into the white dial on the motor push in an rotate the wheel small increments when you do this you will see the travel of the sunroof change.. the idea is to get the sunroof to park in the very center of the roof opening. this you do first.. when the sunroof parks in the center of the opening then the pop up will work properly.. once this has been achieved then you can adjust the height of the roof door to be flush with the roof line
you should have the 126 dvd to follow these procedure.
Bob