Very good advice Minn. The other day I had a brain fart while talking to a friend at the same time I did my control check. I had swapped radios in my 1/4 scale cub andI was standing in front of the plane instead of behind it when I checked everything,something I've never done before, don'tknow why I did this time.Fortunately I was already about 30 feet high before I gave any aileron input andrealizedthis radio had theailerons reversed.It took a conscious effort to land it again and fix the radio.,If it had been a real windy day, I might have been a newly initiated member to the "improper pre-flight club".