[cf-drg]

Check you fuel tank pickup.. I had one that had to much hose on it in the tank.. So after a few flights and rolls, it fell to the top and stayed there.. Was only using the top 1/8 of the tank, the engine ran fine while the tank was full.. But after a bit of time it ran out, even though the tank still has lots of fuel.. Gave it a good shake to get the clunk back down to the bottom, for that day of flying.. But I had to take the tank apart and shorten the pickup tube so it wouldn't happen again.. This might not be problem but it is food for thought.. Also could be dirt in the line, might want to clean the carb and the pickup line...