So I have been dealing with leaky fuel cans for years and finally searched mud and found out my cans all came without the gaskets that go in the lids. I hopped on ebay and bought a couple packs of em but they don't seem right. They are loose in the lid so they will just fall out if I am not super careful how I open and close the can. What gives? Is there more then one "Scepter Military Fuel Can Gasket"?