Hey Guys,
Take that heater and toss it, we have always had problems with that brand- JUNK! We have found the solution- they cost between $75.00 to $125.00 depending on size. They are convection heaters that you can buy at Home Depot or Lowes.We use the 40,000 to 80,000 btu model and heat a 16x20 wall tent without a problem. We have been using this setup for years in elevations up to 10,000 ft. without any problems. You can control the amount of heat you want down to barely running or you can turn that baby up and it will run you out! They have a long hose so you can put the bottle outside of your tent and will usually take a 20lb botle for a 9 day trip depending on how much you need it.
No wood cutting, no mess and instant heat!
Good Luck and Happy Hunting!