The A and V look thinner than the Z and the I
Same letterform demonstrates slight line weight increase on the diagonal aspects
Through trial and error, I found that the current grid I was working to had a 9pt width per square. Because I was working to a 2-square width, this meant that the current characters should have an 18pt line width:
Here, I tried to replicate the Z that I have now, but this time using 18pt stroke:
Before - black, left compared to after - red, right
In my opinion, it looks better now. A slight change, but one that makes the whole letterform flow better, look more consistent, and a method that can be applied to all inconsistent characters.