It appears the resistor was mounted too close to the board. You could probably fix it just by replacing the resistor and gasket. If you get a complete board check to make sure there is some space between the resistor and board. Also lube the piston O ring or better yet replace it. These swell and cause a great deal of resistance and rob your engine of power.
If you have the smoke unit out now, see how many cars you can pull, then check again after you replace the unit.
Pete