I AM GETTING ONLY INTERMITTENT SPARK TO BOTTOM CYCLINDER AND NONE AT ALL TO TOP CYLINDER. I'M CHECKING THE SPARK BY PUTTING A SCREWDRIVER INTO THE PLUG WIRE AND HOLDING IT CLOSE TO THE TIP OF EACH PLUG WHILE TURNING THE MOTOR OVER. IS THAT AN OK WAY TO CHECK IT? IS THERE A BETTER WAY? I'VE...
