Hello all. first post here and I'm wondering if there is any hope for this tractor. It is an Iseki and I think it is model #TX2160F with a Mitsubishi K3B that is locked up. The tractor has been sitting outside without a cover on the exhaust. Is there any way I can un-lock this thing or is it junk. I was hoping that some Marvel Mystery oil in the cylinders might to the trick. Any advice on this would be great.