Hi can anyone please help me with this, I have a firebird super Q 50/82 oil burner and the problem I have is that the timer is no longer working its one of those round mechanical timers that has all the little switches you push in to set the time but it will not rotate properly and gets stuck so the oil continues to burn instead of going off at a set time I have been told to fix this I will have to replace the entire top unit which is very costly, does anyone know of any other fix? Thank you