[cdowns]

is your old tank leaking??
they arn't that hard to clean. i use a pressure washer to clean th cunk and residue from the 40years of crap. then look and see what it looks like if real bad then will treat with muratic acid{swimming pool chemical) tthen rince again with clear water let dry and if in doubt i coat with POR15 tank sealer. have never had any problems doing it this way and a pretty cheap fix