my acid test in on my sneak a peek page.
it will not fail you.
How to Sneak a peek?
nor the tbelt page for 16v.
shows every pulley ever made,
and all false marks and keys.
NO "I" key
NO "I " marks.
the acid acid test, is normal compression
#1 has nothing at all to do with setting the cam.
the Tbelt came with instructions, mine states, #4 clearly.
if the marks are aligned, #4 is firing.. you nor anyone can change that.
its just where it is ,when aligned.