I have a gravely proturn 160 (991081) with the Kawasaki 23.5 hp (fx730v). while mowing, the mower just died. after checking everything, I have came to the conclusion that I have low voltage to just about everything, plugs, fuel solenoid, pto.....I can start the mower by unplugging the kill wire to the coils and running a jumper to the fuel solenoid from the battery, but I'm still not able to engage the pro. I have replaced the battery, rectifier/regulator, checked all fuses, tested voltage from the stator and checked (and even bypassed) safety switches. I am now at a loss, any help would be appreciated.