Seems like Slider Rev is overriding our styles.
I have added this to your custom CSS:
.tp-rightarrow,
.tp-rightarrow.large,
.tp-rightarrow.square,
.tp-rightarrow.round,
.tp-rightarrow.default,
.tp-leftarrow,
.tp-leftarrow.large,
.tp-leftarrow.square,
.tp-leftarrow.round,
.tp-leftarrow.default {
background: transparent url(http://www.eurekamills.co.za/wpem/wp-content/themes/pinpoint/images/showcase-nav.png) no-repeat 100% 0!important;
width: 30px!important;
height: 36px!important;
display: block!important;
margin: 0;
position: absolute!important;
top: 50%!important;
}
.tp-leftarrow {
background-position: 0 0 !important;
}