My original was replaced in a few days, it was great! The reason for the exchange is that I thought it was defective. I even sent inquiries about the operation of this product and the seller responded quickly, but I still can't get this product to work stably. I was told to leave the tank only slightly open but open the burner to let in the propane. As soon as you pull the trigger, the flame goes out. I bought it to light coals and melt ice. Worried if the flame keeps going out. I've tried many propane flow rates, adjusted them at the tank, then adjusted at the nozzle. There has to be a better way to make it easier to operate without having to relight the burner.