Where's the doodah that lowers the wotsit for the thing?

[VertVega]

Good pics sent by gadgetgricey I also had to deal with the membrane.
first the water leak issues and then the tailgate solenoid locking problems.

I have marked in below pic where the membrane especially must be well sealed.
Curved surface tends to raise and leaves a passage for water into the car.



And this pic shows new mastic I used