When I try to go anywhere near my model I cant there always seems to be a massive invisible block around it. I used rhino to create the model then used Blender to convert to .obj and then into UE4. It may be a problem with Rhino, it may be a problem with Blender, it may also be a problem with UE4 and the way imported it.
I have uploaded the model in a .zip file for the purpose of my help, so please do not reupload or reuse