Anybody, Please help I have a 48" scag manual start. I am having problems with the blade engagement. When I start the engine the blades will run at low idle, as soon as I throttle the engine up pass half and full speed the blades will disengage. I am losing DC voltage from the rectifier. I have 45 volts AC out of the stator at full speed, when I throttle the engine down to were the blades will engage it reads 22 to 25 volts AC. The rectifier at this point read 8 to 9 volts DC then when I throttle up the engine I lose the DC voltage. I have replace the stator with a used stator. I have replace the rectifier with a new one. I have check all the switches all seem to be in working condition. Please help me if you can!!!!!!!