Thank you everyone for the videos and the help. Just that we are doing a big trip from Suffolk to Orkneys in June so would like to get it fixed. I've put a request on our local community facebook page which is brilliant for recommendations and I think there is a mobile mechanic with a good reputation who is interested. Which seems better as Alf can stay on the drive way I've got a camping trip booked next weekend so it will have to wait until after that.
I have to say I love this forum. It was what prompted me to buy Alf and we have had a lot of fun camping trips Funnily enough, we were the first Alfs in our area and now we see plenty, become quiet common. But we know how special they are.
Thanks again guys - much appreciated as always x