Hi Rob..
I am still getting those multiple sparks below 1000 rpms. I tried the small cap on the hall leads, adding the 1n4007 diode to the timer board where it feeds voltage to the CDI section of the board, and am still getting the multiple sparks which start as soon as I get the first spark. It's not all the time but like every 3 passes over the hall with the magnet. As I said before, above 1000 rpm it will run the engine fine but getting it started at a low rpm is presenting a problem. Is there anything else to try? I set the pulse width for the BT151 at 250 msec. It seems like I am getting a false trigger from somewhere at this point. I tried the seperate timer board without hooking up the cdi and still get it. I am puzzled now. Is there anything else to try?

John