i need help with the Electronic Spark Control Module if i have a 305 tpi spark control module on a 350 what will happen? because i have one on mine and the timing is off big time is it because i might have a 305 escm i put a 350 tpi in it and i cant seem to get the timing right i have it sent atop dead center. i dont know why its like that anyone know why it would do that?