i have a big problem with my onda 350 CB it runs really well for 5 mintis preforms very will then it dies but give it 2 hours it will start right up i thought it was carbs but i just rebuilt them and there not the problem, when it dies i feel the power dieing out under my hand and i can keep the engine moving and it just slowly dies under me. then you can give it a second, sometimes it take a bit longer and it will fire back up but die again? it will idle fine for as long as i like but when i start moving it gives out after a bit.? im lost and baffeled my bike is a classic but only for 5 mins at a time, dose anyone know someone who had this problem before