First post here. Much good information on this forum. I have been reading with great interest. Have a question. I have a kitchen stove that is running on propane. It uses the typical outdoor (100#) cylinder. I want to use a 20# tank because we do not use enough gas to justify filling the larger tank. I noticed that I couldn't just disconnect the large tank and install the smaller one because the fittings were different. I'd like to know what fittings I should purchase in order to complete the installation properly. I had planned to use the regulator from the large tank so it would provide the correct amount of gas pressure for the stove. The stove is a small 24" type. I'd like to do a safety check as well. We are out of gas in the large tank. (again not a huge problem, but an inconvenience) I have plumbing experience and all the tools, but am not a professional at it. Thank you. Francesco PS. Anything I can do to support the forum just ask.