My son weighs 30 pounds less than I do and he flew my motor and wing this morning. He held the throttle at 65 amps for 15 minutes and gained 3400 ft. When I do the same thing I only gain 2800 ft. Hopefully I can gain that extra 600 ft with a new and larger wing. I’m 30 pounds over the certified weight of my wing when I use 6 batteries.