Activation of first thumb

When number of thumbs equal for the maximum on one page - ".cloned" thumbs are generating for infinity scroll. The problem is that at the page load the first non-cloned slide must be activated.

function showFirstSlide(){
      // Activate the first slide
      $('a', $thumbsLi.filter('.slide-0:not("cloned")')).trigger('click');
}

Current selector returns all ".slide-0" items (3pcs)
in selector not("cloned") dot is missed. correct selector is:

function showFirstSlide(){
      // Activate the first slide
      $('a', $thumbsLi.filter('.slide-0:not(".cloned")')).trigger('click');
}