Timing question

[fixkick]

love that odd belt deal,fun challenge
so it will not land the cog belt ribs at zero
you are saying
first off there are 3 belts. or more. G13, G16a , G16b not the same.
the timing marks are clear below links
the bottom cog has 1 more mark and see the white painted arrow above crank on block, this can't change or be off,
the top cog, cam wheel has wrong false marks, seen below.
the head has inside hidden pins called ferrules , if missing head cants.(twits)

http://www.fixkick.com/t-belt/tbelt8v.html

now notice head does not sit over crank center line. but to right facing it.
this feature lowers the engine to fit, low hoods like swifts.

so if head is milled too much or shaved. too much
the head moves to the right, (facing engine)
this causes the cam to retard. because the belt is now too long. and or cogs miss.align

it must be shaved horrible
the easy fix is a racing cam cog, adjustable for G16a. i wonder if still made, Ill look.