Can't help - but I would also be interested in finding a reputable supplier who would clean the jets / carry out a service as ours has a mind of it's own at times and refuses to start after being on continually for about 5 hours.
If you leave it until the morning it then starts again and works perfectly - just doesn't like 6 hr shifts
I noticed a small crack on the element and some bits of white flaky stuff off the element from time to time.
