Today, my stove quit again. It turned out there were no pellets in the burnpot, depsite a full hopper. Apparently the pellets in the hopper had bridged over the feed screw. So I stuck my clean-out tool down into the hopper, apparently breaking up the bridge, because then I could start the stove. Wow this is getting unreliable. Is it because I switched to Sparkman (Walmart) pellets ? They are longer than Energex. I want to be able to depend on my stove !! I found that to have oil back-up, my furnace will need to use about 1/4 gallon a day of oil to keep warm and not let acid build up and eat the seals. This is 91 gallons of oil a year, for about $365 a year if oil is $4 a gallon. Burning that oil just to preserve the seals in the furnace, so I can use it as a back-up, would eat a lot into the savings I want from using pellets. Any thoughts ?