I recently put in my new front seats and have noticed that they wobble when no-one is sitting on them, it seems like the outer runners don't sit properley on both of them. I have a suspicion that there is a piece of plastic or something that should be there but isn't. Unfortunately I have subsequently sold my old seats meaning that I can't check this.
If anyone could describe to me what their outer runners have on them I'd be very grateful

I would get a picture of mine but my camera has died

Thanks
