How can I make a perfect dashed line fot this pattern so that it is perfect everywhere, even at the intersections? It's not perfect yet, but it is almost good...

UPDATE: I think I accept that the intersection of the dashed lines is not completely perfect, but it's almost good... I want to make a brush with the Argyle pattern, and that's why I wanted to know... I've been accepting that the brush pattern will remain a perfect rhombus and when the drawing (the pattern) is finished, I'll transform it afterwards. 

Regardless: if there is a solution to how to draw a perfect dashed diagonal (with a dashed line brush), then I'm curious about it...

My new argyle with my brushes and  with a little texture

My first argyle: