I am experiencing a frustration with the flow from my propane tank on my Hunter 340. The tank is full, but the gas does not seem to always flow through the hoses and pressurize the system. If I disconect the hose connection and then reconnect that might work, but not always and I may need to disconnect a few times. When I disconnect sometimes I get a gas smell and sometimes not - and the pressure gauge does not read. Any ideas on what to look at? I have no experience troubleshooting a propane system, but the problem definitely seems to be either the tank itself or in the initial lines that connect to the tank. Thanks for any advice...Rob