Hi,
Sorry for the delay of this answer, I can see you have figured out and tweaked the rule in “jquery.smartmenus.bootstrap.css” that controls this:
.navbar-nav .sub-arrow, .navbar-nav .collapsible .sub-arrow {
position:static;
margin-top:0;
margin-right:0;
margin-left:6px;
display:inline-block;
width:0;
height:0;
overflow:hidden;
vertical-align:middle;
border-top:4px solid;
border-right:4px dashed transparent;
border-bottom:4px dashed transparent;
border-left:4px dashed transparent;
}
By default the space is equal to that of the regular Bootstrap carets.
Cheers!