Door Trim Yellow Door Clips

So, as I'm sure we all have, I've taken off my door trims and snapped all the plastic clips.

The problem I have is everywhere seems to sell the black push to fit bits but I can't find anywhere that sells the yellow bit that sits in the card. I've snapped nearly all of them.

Anyone got any links?

Thanks in advance.

This seems like a pretty good deal though...

Winder, handle and lock for £18.50. Doesn't come with the yellow bits though....

(I managed to snap one of the lock fittings too)

Use screws as in this thread

http://www.aulro.com/afvb/projects-tutorials/70778-defender-door-trim-fastener-fix.html
(you may need to register to see the photos)