trying to degree my cam

383 new build CL21-224-4 cam
supposed to be 106 intake centerline
[URL][URL]https://www.compcams.com/...-hydraulic-flat-cam-for-chrysler-383-440.html[/URL][/URL]

I get 108 with the timing chain straight up.
I switched to the triangle and it was coming out as 100 degrees.
melling says its 4 degrees each slot, seems more like 8

After I chaged it to the triangle, I found tdc again and checked at 50+ and 50- and was getting 144 + 56
At straight up I was getting 152 + 64
am I missing something?

Should I have left the sprocket on O and just align the cam gear dot to the triangle?
that seems to make sense.
It sucks melling doesnt have manuals online that are easy to find
Pretty sure the cam is ground with 4° advance already, so advancing it 4° more would put it 8° advanced.
Install it straight up... Dot to dot and check it again.