membership levels and nav menus

I have two custom membership levels with identical actions...  one can see navigation menu just fine, the other cannot?  Any idea where the problem lies?

Thanks in advance, 

In looking at the page elements for the index.php for the two membership levels...  the one without the navigation menu shows <div class="sys_ml_wrapper bx-def-margin-sec-leftright bx-def-padding-sec-topbottom"> after div class="sys_main_logo" while the one with the correct showing goes directly to div class="sys_main_menu"

Wondering if that extra code is the part causing the problem, and if so how do I remove it?