i traded a revo 3.3 rc truck for a Easy Fly 40 Trainer on craigslist.
never flown and i was the first to put fuel in it.
as i was flipping the plane around and looking into the body of the plane, i noticed that the fuel tank would slide towards the the tail when i had the plane's tail angled towards the ground and it would slide towards the nose when the nose was angled towards the ground.

is this suppose to happen or should i be looking for a missing screw or something to secure the fuel tank?