I filled my tank up all the way for the first time today, and it was leaking from the top. I jammed my arm in there from the wheel well and felt around. The top of the fuel level sensor felt wet. I jacked up the driver side of the truck and put jack stands on that side only so it was tipped way to the right. I used an inspection camera to take a look, and there was fuel trickling out of the cube shaped piece on the top of the sensor that the cable comes out of. I will be calling Boyd's in the morning. I'm not looking forward to emptying and dropping the tank. Here's a video that shows the leak.
https://youtu.be/Yi5TRk_VtoY