Next Gen Gallery View

Hi I have installed latest version NExtGEN Gallery View and I have this dirty big arrow sitting on my image. I have luckily only installed it on one gallery <a href="https://www.broomeandthekimberley.com.au/2011/05/broome-photos/">

Does anyone know how to get rid of the arrow or at least make it smaller. I have read that quite a few people have this issue but I haven’t seen a fix. Thanks