the dial for my main over had fallen out a while back, and I've just been pushing it back in, but after time the dial isn't aligned with the accurate temperature so I'm burning food.... what can be done about this? I have an Indesit double oven FDU20, it's an inbuilt one, with the work surface running all around the hob, so we can't pull it out to work on it.

Lizzy, June 2012