[JoeAirPort]

That fuel tank holds a pound of fuel you don't need and will totally make it balance nose heavy when full. That would be the first change I'd make. Go to a 16 oz tank. 20 oz is the absolute max but with 3D you'll still land with a half tank for 10 minute flights. You could just put 16 oz of fuel in your 32 oz tank to test this. 16 oz is about 52 turns of my fuel filler pump.

Now that I think about it your empty and full weight don't make sense. The tank holds two pounds of fuel.