On Saturday, I finally got some time to figure out what went wrong.

Opened up the bottom of the fuselage under the fuel tank. Saw that the fuel line was cut off by the brass tube for the fuel pickup line. That is what caused the engine to quite abruptly. After further investigation, it appears that the platform that the fuel tank rests on broke and since the take was fairly full it pulled enough on the fuel line to cut it. The brass tubing had some burs on it as well that contributed to the fuel line getting cut.

It turned out that there was not that much fuel in the fueslage so I just used the iron on high heat to boil it out.

I rerouted the fuel lines so there would not be as much pressure on them and remove the burs on the brass tubes. That should reduce or elimate the chance of this happening again.

I also decided to make a hatch under the fuel tank since this was the 2nd time I needed to get in there and had to cut the bottom of the fuselage. It was easy enough and I should have done it in the the first place. That also made it easy for me to locate the battery up front so I did not have to add any lead.

Flew two times yesterday and it flew well. When the tank is full it seems quite nose heavy but once it is empty it seems tail heavy. I can really now see the benefit of having the tank over the CG or a smaller tank so there is not as much shifting of the CG.