I'm using MS2 on 2 L28 datsuns. One is a 3.0, one is a 3.57. On the 3.57 I tried using JS10 and was having problems. I contacted Matt, he suggested D14. Since I was already using D14 on my 3.0 I set up D14 on the 3.57. I soldered a lead to pin 7 of the cpu with a 330 ohm resistor to the bip373 and the engine started running good. You seemed very adamant about not trying a documented solution to your problem.