Changing Flex Theme Mobile Menu Breakpoint

Hello,

I'm looking to move the mobile breakpoint to a higher pixel size. I'm able to change the CSS breakpoint for displaying the mobile menu and hiding the desktop menu, but I know some changes need to be made in the JS. Any recommendations on the easiest setting changes here? It looks like the function isScreenSizeLarge() is doing most of the lifting here. Looking to move the breakpoint to the 1024px breakpoint. 

Thank you for your help