taylorman, i've been runnin the same blaster 2 for 6yrs.i've had great luck with it.never ran a resistor or anything.msd box(6a,6al,etc.)have a problem with the heavy ground cable that goes into the box comin loose at the board.might zip off the rivets holdin the back cover on and look and see if the solder is cracked on that ground circuit.i've fixed alot of boxes just by repairing that one little thing.causes alot of coil problems if the module doesn't get a good ground.might check it out.