There are dozens of ways to accomplish this task. Here's how we do it at BreitWerks. A worn out window regulator will affect how the infamous "window drop" performs on the late model Porsche cars. This includes the Boxster, Cayman, 996 and 997. After you have gone through the effort of getting both the outer and inner door panel off, and replaced the regulator, you want to make sure your window seals properly so there are no leaks. This video shows you a quick way to mark your reference points to minimize the number of adjustments you will have to make to get that perfect fit. Give us a call if you have any questions.