Ok so at UKM this weekend my hopper decides to pack up, leaving me as a virtual spectator for 4 games with my gun only able to shoot a string or 2 before stopping. Bloody hopper's not feeding paint consistently, it's fine at slow speeds but once you start to rip it gives up. Now I'm 99% sure it's not the batteries because they were fresh for the tournament, but the drive cone is just not turning. Any ideas?