Rowe AMI MM-1 R36380A Amplifier Schematic Errors

Just joined forum, hello and thank you in advance. I am repairing Rowe AMI R36389A amplifier. All transistor. Finding errors on Rowe service manual schematic, for example Z1 Zener diode is shown backwards. Does anyone have a list of schematic errors ? Something does not seem right with 15 ohm 1/2 watt resistors R61 62 64. Had shorted output transistors on one channel, burned resistors on small circuit board.