You might want to try this mod on page 1 first and see how you like it.
all you need is a screw and scrap of plastic. then you can program the switch to be momentary and your done
http://www.rccrawler.com/forum/electronics/321742-gt3b-hack-tech-thread-25.html#post3231426
Thanks Spoo I'll give that a try before I crack the case open