For breakin make a mark 2&1/4" to the right (clockwise) of the TDC slit on the dampener & when it fires have a helper with the light turn the dist housing till the new mark lines up with the zero on the timing tab which is 35.5 degrees (vac adv capped). This'll work good & is easy/trouble free to do for the 2500 rpm breakin. Also need the stat out (for breakin) & a shop fan in front. I dont think you have enough airflow