Sorry, late getting update posted. Looking under the rv near the gas tank, this is what I saw. Fill pipe consist of two foot rubber hose, then 7 foot 1.5 inch metal pipe, then one foot rubber hose, then metal pipe, then short hose with 90 degree metal elbow then final hose to fuel tank. All the hoses were attached to the pipe with metal hose clamps. Almost all the hose clamps were loose and 6 were just dangling. The metal elbow was so loose it had separated. Bottom line, road vibration over last 10 years caused this. Easy fix but very dangerous. Suggest other rv owners make a quick check to avoid a catastrophe. Good luck!
Doug.