I see the same thing. With the engine not running you should test the voltage supplied to the coils from the ignition switch (meter connected from ignition to ground). That voltage should be very close to what your battery voltage reading is ( battery + to ground), on all three cylinders (min. 12 volts). If it is not, you need to find out why, and fix it. I DO suspect there is something going on with that cylinder that is running cool, but one thing at a time. Get the ignition problems cleaned up first, THEN see what you have. ...J.D.You should look at the voltage drop between the battery and the coils. The problem is not necessarily the battery, as the alternator powers the bike when it is running, not the battery.