Bob and I decided to head out early Saturday morning, due to the higher temps forecasted for the day. I took the Trex 700, the Compass 6HV, and Protos 500. First flight was on the Protos 500 while the electric starter batteries were on the charger. I helped Bob with a couple of his flights, and then broke out the Trex 700. First flight, it was running great. Having the needles set to 1-7/8 out. By the time I got to the bottom of the tank (~7 minutes), the motor started to run lean. Landed fast and...