Can you tell me is there any way for the cams timing to be off if all the markers are lined up with the cams shaft chains and all markers line up on the timing chain?

 

No one has a answer for this?????????????

 

where did you got the marks from.? 2 yellow should be on top red one on bottom?

 

http://www.nicoclub.com/FSM/350Z/coupe/2003/em.pdf

EM-70 has service procedure... I don't think so unless the chain is worn maybe?

If everything is installed correctly, shouldn't be an issue. If installed incorrectly, you probably would have bent a valve or something from valve-piston contact I'm guessing.