I am new to smoking meat, but I have read a lot on this forum. I have considered buying a Masterbuilt Cookmaster Propane Smoker. http://www.basspro.com/Masterbuilt-Cookmaster-Propane-Smoker/product/11082605010039/ over an electric model. Does anyone have any trouble holding temperatures steady in propane units? I have seen others have added needle valves to control temps. How much tinkering goes into setting the temperature? I want a smoker that can handle a variety of ranges in temperature, is a propane smoker the best for this? What would I have to do to convert this to a cold smoker? Thanks in advance.