Barry, Peter fitted a new snug in my old Aga OC Oil Cooker. First class, just thought I would let you know the fuel burn results(by the way I am a retired Engineer) . Running the cooker 24 hours per day it is using 31.9 litres per 7 days which is exactly as per your brochure. It was using 58 litres per week with old Dom burner that is Some saving.I am delighted and it has also solved the problem of sooting which has occured with the change of Kerosene. You have a winner with your product and given me peace of mind and I will get my money back.Well done and your man in N Ireland is a great fellow. Regards Harvey Bicker