driver side window clip

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Hi everyone,

hope somebody could help me or give me advice.

i have a 1999 306 td 3 door, one day my driver side window collapsed. i had the regulator and the regulator clip changed but a week later the window still keeps tipping one way. It keeps popping out of the grey plastic clip that sits inside the rubber rails and holds it to the side of the door.

The clip used was an old one so i think its pretty damaged. But i cannot find it anywhere, or even find out what its called. I have even gone through the Haynes Manual for the 306 and it doesn't have a picture.

the closes thing i could find was this simple diagram but still nobody know what its called



any suggestions?

any advice would be appreciated.