Thank y'all for your great inputs,

I'm gonna take the tank off, I know it's gonna be a big pain in the b.....tt but there is no other choice left. I'm gonna check the fuel line, my plane is not a year old, may be 8 to 10 months or close to a year. I hate to move the battery pack and receiver as the plate that goes on top of the battery pack and receiver, I've glued it to the side wall of fuselage so it keeps all of 'em snug and protect it from vibration.

This hobby needs patience and I do have a lots of lots of patience, having an American wife taught me how to have patience, if you've never seen one in your life. I'm gonna update y'all.