Keymaster

Spent a few hours of my life trying to resolve water leaks through the door seals in my F and TF, but that was some time ago.
Have you tried adjusting the blue plastic serrated shim marked G on the diagram. Be careful to mark its position before altering it so you can move it back if you need to.
When slackened off the shim will move up and down which slightly alters the vertical camber. Maybe this will get you the contact with the stop you need?
Bit of a trial and error to get it right or near enough I'm afraid, you will need patience with these adjustments.