Cabrio roof minor fix

[idan182]

Car is a '95 Fiat Punto

I want to fix my roof for the winter, it seems like the vinyl got folded at this point:

http://i61.tinypic.com/6xzryg.jpg

So water can get inside.
I can see that there's a little gap between the rubber and the roof itself in that point:

(There's a pin which should go inside a hole but there's no hole, all other pins are in place)

http://i61.tinypic.com/2enm54k.jpg

http://i62.tinypic.com/2zrhz5h.jpg

So when I close the clamps to close the roof, it should press the roof together with the rubber.

Is there any minor fix that I could do? I was thinking of sticking a piece of rubber inside the gap.
Would not want to use a silicone or any other glue as it would be ugly.