I have one of your generators, a NTA2 Cummins Genset Package 300KW @ 480V with a 600 gallon UL listed fuel tank/rupture basin, base and sound enclosure. I have a leak in the interstitial space of the 600 gallon fuel tank. What are my options for repair? Drawing # 02D13798 dated 10/16/02 Valhalla Penitentiary.