Ok guys and gals, What happened to the god ol days when you could change an orifice kit and brag to your friends that you just converted your NG thingy to an LP thingy? Did one of these gasses change in someway? The thingy in this case is a Vermont Castings Pyromaster heating stove that I was so proud of doing my research on, that I bought this weekend. I found that just the logs for this were 5 times more than I paid for the complete unit. (red flag?) Duh. Oh, I knew it was natural gas but conversion kits are out there a dime a dozen. Wrong. As I live out in the Boonies there is no Nat. gas available so propane was my answer. After I got it home, set it up on my newly set rock paradise, I opened a side door and read "This unit is not convertable to any other gasses". Whoops! After I said bad words, (good golly gosh darn) and stuff similar I hit the internet for that magic answer that never came! So I have just paid for a good lesson. There is a question in all this heart breaking whine somewhere. Oh you, Why can't I change it? I realize (most)(some) differences between Nat and Lp, but what else has changed?