I re-used a ballast resistor from an older Mallory coil when I replaced it and the old Mallory dual-point distributor with a new Mallory dual point distributor but switched coils to a new MSD Blaster 2 that is supposed to have an .8-ohm resistor. Is there some way other than buying an ohm-meter (which is is short supply here as are parts stores that sell resistors) to tell if the resistance is too great? The engine runs perfect but I worry I will burn the new dual points. Any old school car guys out there who have reccommendations?