ok.. so I have an old OFNA world's GT.. sat for over 16 yrs.. changed all my batteries.. new fuel etc.. runs great on a cold start..nice plume of smoke.. my problem is and always seems to have been.. after its gets hot it wants to die at idle.. it will idle for about 15 seconds then you'll hear it kinda lean it's self out and die.. and it wasn't even at full throttle..used about a 20th of a tank.. not enuf room here to open it up and let it sing.. so it's not like it was overworked.. it was just brought up to normal operating Temps.. thx for any help