Was looking at get the OEM window deflector from Mazda for my 2014 Mazda5. I always thought those deflector are just stick on using double sided tape. but looking at the instruction sheet (attached) starting P.6. it need to install a clip/bucket between the window channel and the door frame. Do I just pull those window channel down? I tried to do that on the car but it seems the channels stick to the frame pretty tight. also what are those clip are for? looks like they don't serve any real purpose?