Which are you building? You can't mix & match because the 2 have different tremolo circuits. pin 8 of V5 in a 6G16 goes to the junction of 2x470K resistors. On the AB763 it connects to 100K bypassed with a 25/25 cap.
On both amps only one of the last pair of bypassed cathode resistors connects to V5 pin 3, the other connects to V4