That's right, I have a cable guide but no plastic pin...I will look at both options and take the easiest! Many thanks for the details and thanks Crantinope
I'm just wondering if I've got any kicking around.....I've broken a few cars for spares in the past and I usually keep as many nuts/bolts/fixings as I can as they always come in handy (and those plastic rivets get used in the automotive industry a lot). I'll have a dig around in my boxes of bits (I'm assuming the pin will be a standard size?)......