We talked about doing the floating ground in this thread.
http://www.gasgasrider.org/forum/showthread.php?t=528
But there is more (better) info in one of my later posts.
I'll have to do some searching to find it.
There is a wire in the 2K3 stator you have to de-solder and
re-solder to another location on the stator.
Then make sure all of your electronics, (except the CDI), to
the battery + and - terminals.
Make sure the isolate the rectifier/regulator housing from the
frame and ground only to the battery.
Maybe someone can search my past posts and find it.
Good luck. Jeff