was the fitting that actually secured on the tank itself loose or the source of the leak? how about the hose piece from the tank to where you hook up the flush hose? You might have a different set up than what Im picturing but should be easy to tell where its coming from looking up under the TT.
*Currently trailer-less but shopping
07' GMC Envoy w/ P2 controller (current TV)
88' Chevy K5 Blazer (soon-to-be TV)
74' VW Superbeetle (1303)