I have a vertical propane smoker from Cabelas. For the last year or so I have had trouble getting it up to temp (230). I have tried everything from cleaning burner, using full tank, sand in the pan, etc. and still have trouble. Recently I bought a cast iron skillet and used lump charcoal in it to try to get temps that way. Success!!! I now use my propane smoker as a charcoal smoker and tweak the temps with the propane and vents. Has anyone else ever had to do something like this to get results?