Servo trim adjusting
I fly at the same field with crosswind so I know him pretty good. I agree with everything that he said. I will add that a lot of times on a new plane trim flight two pilots will go out for the flight. we use the second pilot to make adjustments on the trims in case the trim is way off. Sometimes when it's that far off it takes all you can do to just keep it flying by yourself, so having a second pair of hands comes in handy. but 90% of the time getting off the ground with a plane out of trim is no problem
just my 2 pennies worth