I recently picked up this old stove, it's a little rusty but structurally seems to be there. I was wondering if anyone could give me some insight on whether it is worth running this. The stove was free so i won't get my feelings hurt lol. I'm primarily concerned with the ability to actually install this stove legally I was hoping maybe someone might have a manual or install specs. Then my next concern is with the actual efficiency of this stove. Is it worth just getting another more efficient stove.... how much more efficient are the new ones? If anyone has anything to help it would be appreciated.