I have a 1968 140 with a 12 hp k301 that a got from a friend. The only real issue it had was it didn't charge. After a new regulator and ignition switch it is now charging. It has a 10 amp stator that has the coil pack on it. The coil pack was replaced in the past with an external coil. The issue I am having is that it seems to be drawing excessive amps. The coil is pulling 6 amps and the pto draws about 3.3 amps. So when at full power and the pto engaged the amp meter shows it not charging. Seems like 6 amps is a lot for a coil to pull. Does this sound right or should I change the coil? Any thoughts?