Rear window catch

[weebrian]

Driving down the A14 the other day in high winds and my rear drivers side window started banging away. I thought the catch had come loose but when I looked, the screw holding the catch to the glass, along with the domed fitting and the rubber grommet had disappeared. I'd guess that they are pretty specific to the Bongo so don't have the foggiest idea where I can get them from. Any ideas or an alternative way of fitting the catch to the glass?

[wonkanoby]

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try george