Also, you may not be able to get rid of the "hop/twitch" entirely, depending on which type of fire button you use. I've used the momentary toggle type (triainer switch on a futaba) and that's the worst for this problem, second worst was the "radio shack" fire button. I use the click-y type buttons for firing. They are the type discussed here in this thread:
http://www.heatarmor.com/phpbb/viewt...f=12&t=689