Hey Dave, thanks for the warm welcome and reply.
Yeah, I did ask myself that question but the car itself is a corker at a very good price and I do like to tinker - I always say that at the end of the day all problems with cars can be fixed. He also mentioned that they haven't worked "since his missus spilt a drink on them". Not sure how much truth there is in that but if anybody else can shed some light if this has happened to them and subsequently been resolved I'd be very interested to hear the symptoms and solution 🙃