Fairbanks Morse Mag fiber timing gear without timing marks

[09112]

I have dismantled a Fairbanks Morse Magneto for repair only to find that I have no timing mark on the fiber gear inside the cap. Any ideas other than replacement? I've watched a rebuild video a number of times without finding an answer. Could the timing marks be on the bottom side, requiring me to remove the shaft? I am totally out of my depth on this one.

 

[gator]

Try these 2 links for help. In link 1 for an AC B he says:
"The magneto for the B is set up clockwise rotation so you'll want to use the "C" mark on the fiber drive gear. It may be difficult to see. Try cleaning the gear with a dry cloth. Do not use a solvent or you may obliterate any remaining evidence of that mark. You may even need a magnifying glass to find it. Once found, mark that valley between two teeth well for the next time".
At the bottom he has a procedure "Recommended timing procedure if magneto internal gear marks are not visible".
Link 2 is for a PDF of the Fairbanks Morse Field Service and adjustment procedure. Hope these help.
Link 1 .
Link 2

 

[09112]

Thank you Gator. This is just the info that I need.