Extra arrows

Hi,

I am busy setting up a site on Localhost and find the Maximenu very powerful - thank you.

I do have one problem though:
I have a 3 level menu. The level 1 is fine and set up as a horizontal menu and has the normal drop down arrows indicating sub-menus - great!

I have arranged the second level items in two columns, each contained in the "greybox" class (I have modified the background colour in this class as you will see in the attached image). This all works fine except the level 2 menu items that also have sub-menu items show two little white arrows AS WELL AS the normal drop down arrow.

Please see the attached image for clarification.

Any ideas where the additional two little white arrows could be coming from and how to get rid of them?

Thanks.