Hi,
Looks like you have modified your arrows, here is what I am using locally for my dev version stock arrows.:
.rev_slider_wrapper .tp-leftarrow, .rev_slider_wrapper .tp-leftarrow.large, .rev_slider_wrapper .tp-leftarrow.square, .rev_slider_wrapper .tp-leftarrow.round, .rev_slider_wrapper .tp-leftarrow.default {
opacity: 1;
left: 0px!important;
}
.rev_slider_wrapper .tp-rightarrow, .rev_slider_wrapper .tp-rightarrow.large, .rev_slider_wrapper .tp-rightarrow.square, .rev_slider_wrapper .tp-rightarrow.round, .rev_slider_wrapper .tp-rightarrow.default {
opacity: 1;
}
Thanks,
David.