I have a model 917.270820 42” 19.5HP Craftsman lawn tractor. A couple of days ago I noticed (overnight) a moderately strong gasoline smell in my house. I did a lot of investigating and finally discovered a wet spot along the horizontal seam in the fuel tank of my lawn tractor. Apparently, the fuel was seeping out of this seam, evaporating, and ending up being smellable in the house. I see on the Sears parts site that a new tank is about $60.00. Is there any other reliable source of compatible (new) parts for this machine that is significantly less expensive? It looks like a fair amount of work to replace the tank so I don’t think I would install a used tank.