as far as i know yes, its the way i was show by an old vw dealership fitter/ bodyman that worked in germany in the late sixties and seventies.
i still do it the same now as have found trying to put the trim in after can be done but either buggers the trim and you do not get a nice finish or u rip the rubber.Due to the pressure of the glass and the body, as the trim strip is actually a locking strip too. one trick he did teach me was to warm the trim ( if your using the plastic) in a bucket of really hot tap water then it shapes to the curves a treat.
:wink: :wink:
jon