I have a Tempstar oil furnace with a beckett model "A" burner. I recently had it serviced and the technician told me that the transformer needs to be replaced. They quoted me $350 and I can buy it for $60. Is the burner something that has to be adjusted after being installed or can you just bolt another one on? Currently the system kepps tripping and before it was serviced I changed the nozzle and that put a stop to it shutting off, but now it is doing it again. Any Suggestions?