Where up north?
anyway nothing jumps out.



Did you degree the cam?? I would have installed it at 105.

Usually three four things things limit your RPM
1. Fuel delivery but if you AF number did not suddenly climb doubt that's it

2. Valve spring float since you have new and I assume checked to see if it was not coil binding should not be hear.

3. ignition since you tried some different not hear although I like .004 gape.

so likely one of these two and most likely the first.

4. way too much pre load on the lifters and it's forcing the valve float.

5. spark plugs I would have used Chanpion RN12YC or RC12YC

Good luck!