I use the following CSS to remove the carat symbols from the primary Nav. The second half of the code is used to add padding to make-up for the missing symbols to re-center your menu names.
.menu-item-has-children .dropdown-menu-toggle {
display: none;
}
.main-navigation .main-nav ul li.menu-item-has-children > a {
padding-right: 30px;
}
can you raise a new topic where you will have access to the Private Information field, and in that share a link to your site so we can see whats going on