Thanks for you reply. I’ve double checked everything and it is all symmetrical. Interestingly, I used copy/paste on the header from an alternative page and inserted it directly underneath the header on the homepage and even though the settings are the same, they show a different spacing alignment.
I also took at look at your demo page and when going from the front page to the shop page, your navigation spacing does indeed change.
What I have done is simply use copy/paste of the header so there a currently no variances on spacing when the settings fail to display correctly.