Great Job and the placement really doesn't matter as long as you had a good time. I have had more fun at some shows coming in dead last an not caring and just going out and trying to blow stuff up before the show then to sit there and say ok I HAVE to win! And I would try higher before really trying lower in the freq. Most the durangos I have seen are peaking closer to 50-55 hz. But it really depends on your situation. Good luck at the next showing and have fun Cause that is what it really should be about.