I looking for someone in and around the Pittsburgh PA area who works on Clean Burn waste oil burners. I have a Clean Burn CB-90-HS waste oil burner that needs worked on. It dumps excess oil inside my Buderus GE315 boiler. I have replaced the oil solenoid, new nucleus in the air solenoid, cleaned the oil regulator, resealed all the pipes, new nozzle. Tried adjusting a the oil and air settings with no better results. This unit ran perfect last year and all I did before firing it up this year was clean out the boiler and clean the nozzle. I'm sure no Clean Burn dealers will work on this unit because the burner has been slightly modified to fit the boiler. I am at my wits end trying to figure out what is wrong. Any help is greatly appreciated. Send me a PM if you know of anyone who works on these.