So I got an email from the folk that I had emailed about buying a new knob for the oven saying that I can't see the model no, but GGtGG was working, looked at it and said "Right, take out these screws we will be able to move the oven forward"
I said "WTF" but he managed it, found the serial no. on the top then put the oven back, away again and screwed it back in