I have a 1969 Electro 12 and recently my ammeter was showing +10amps at near full throttle. Battery voltage with tractor off measured 12.7 vdc. Battery voltage with tractor at near full throttle measured 13.9 vdc. I have a couple concerns, (1) If I run the tractor for several hours with the 10 amp overcharge, will Battery voltage increase and possibly damage the battery? , (2) I am at a loss as to why the ammeter is reading 10 amps. I have 3 kohler pn 41-403-06 voltage regulator/rectifiers and all give me the same result of 10 amps overcharging. I checked continuity on the stator wires to ground and both showed no stator short to ground. Welcome any suggestions?