Hi sorry to bother you, but I have a problem I hope that you might be able to help me with. Basically I have a K11 and I bought a Thule Roof rack system, 754 760 1108 rapid fit. I know for sure it is the right one. But I am having difficulty trying to fit it. Just wondering if you can help at all. I've done the front bar easy. Goes in nicely under the front door rubber seal. But I can't seem to get the rear roof bar into the rear window in between the rubber and the window frame. The window is fixed and won't open. I would appreciate any help you can offer.