When it has no fuel in it, if you lean the plane back, it should sit on the fins in a wheelie and stay there. Sounds like you might need to add an air-brake on final once you clear the thresh-hold of the runway. You must have it pretty close, because if the plane is too nose heavy it won't want to rotate on take-off, the main gear will lift off before the nose gear and it would spin out. (Ben-Dare-Dun-Dat) If you don't have an airbrake use a longer approach...but not TOO long. :-)