Thanks for the replies, but I have an Aga, not a Rayburn. Unfortunately I can't afford to pay the wee chappie to come and look at it. It died in March, I have been cooking on a camping stove, but it's getting cold now. I did try to do it before but don't seem to be able to do it one handed. I will keep trying as I have some oil left in the tank. Once the il is gone I will need to rehome the Aga :-(