i have just finishing my fuselage in gmax i have exporting my modele in C.O.F
but now i have a big trouble ?

my modele look ok in exterior view but whene i beguin to scroll my view around the plane the fuselage go at the vertical upside down and the wing stay at normal position ???
dont know why but whene im exporting the modele it take longt time ?
dont know what i have made wrong the modele look cool in gmax

pls help :'(