HI @westy007 !
The Navigation Block once added to your Header, is likely to be nested in Rows, and the hamburger menu takes on the alignment of whatever the Navigation Block is set to.
To change this behaviour, you could try duplicating the group block that contains your Header, and use CSS to hide on desktop but show on mobile and set that one with your navigation menu on the left side.
Alternatively, you could set your Navigation Block to the left for both desktop and mobile if you don’t mind where it is on desktop.
It really depends on where you put the Navigation Block itself.
Hope this helps.
