Fanuc 120iBe Arc Mate torch.

I have a Fanuc 120iBe Arc Mate with a torch, that cuts circles in pipe. An operator turned the power off, we replaced batteries, zeroed out all axis, but J6 only had mark on the wrist. We zeroed out the J6 by lining up the dowel pin at the bottom 180 degrees and the dowel hole at the top 0 degrees, with the screw holes 45, 135, 225 and 315 degrees respectively. The torch now runs through the program, just a little off linear and vertically. My question is does anyone know where true zero position is on the outer part of the J6 wrist? Thank you in advance for any replies.

Thank you. Yes we are about to reset the TCP on a certified part.

The manual drawing is what I based my assumption on, only there were 2 dowel holes 180 degrees apart.

Thank you for your responses.