To clear up reaction time question. As an example, when you see that a guy has a .423 reaction time, that means he was .023 from a perfect .400 reaction,(using a 4 tenths pro tree). I think you may be thinking back to the old way they used to represent reaction times on the old chrondek style systems. I remember when the time tickets showed your true reaction time as say .121 or as we knew it, .621 on a 5 tenths tree.(which meant, even back then, you were slow on the light). I too think electronics in bracket racing takes away from the true challenge of trying to make your car run the number. But electronics are so embedded in racing today that it is here to stay. I run no-box classes when I race. Much more challenging. I think many guys feel the same way, as those classes are the biggest classes just about everywhere you go in bracket racing weekly events. Although I have many friends that run electronics, and I don't thinktheir efforts or results on the track mean any less. Jus my humble opinion.