I have a legal question. I am renting hanger space to a fellow for the assembly of his light sport aircraft. The agreement is that he pay me a small amount for the use of the building and my normal shop rate for my services. Turns out he has no experience with airplanes, fuel systems, electrical systems, brakes, engines or anything about mechanical "stuff". I agreed to make his fuel tank and plumb it for him but now am getting in, with feet dragging, way over what I thought I was going to do. My question is, even though he is doing "all" of the work am I going to be liable sooner or later, at his demise, for the advice, help and fabrication on this aircraft. I am the sole proprietor and don't want to risk anything that I have. Thanks.