Hi Hans,
it's a simple math, you have to reduce space used in menu column to get more space for menu items. It's like when you trying to put 6-7 people into 5 sits car!
Step 1: in Template Options > Menu > Mega Menu > set only "MegaMenu" then [=] will dispapear in desktop (laptop/pc) view, and you will safe ~40px !
Step 2: reduce space between menu items and "v" icon on smaller screen sizes.
@media (max-width:1270px ) {
.sp-megamenu-parent > li > a,
.sp-megamenu-parent > li > span {padding: 0 10px;}
body.ltr .sp-megamenu-parent > li.sp-has-child > a::after,
body.ltr .sp-megamenu-parent > li.sp-has-child > span::after {margin-left: 3px; }
}
it should help ! I use it on all my private sites. We have those tips in Helix docs as well.