I have I believe a 33 gallon main tank and 2 10 gallon saddle tanks. Back around three years ago I was low on gas in saddle tanks and I sucked them empty while running down the lake. Once I figured it out I flip over to main tank and continued on. I don't burn much gas so I haven't used those saddle tanks since. I just noticed today when getting things ready after putting 10 gallons in the main tank, the gauge is not working so now the tank I always use I will not know how much gas is in it. I have a few questions. Is this a internal float situation? Is there a problem if I start using the saddle tank after they have been empty for three years? Is it okay to run my main tank empty? Any suggestions? Thanks