Just purchased a 2018 Hisun Sector 250. The gear shift is hard to engage. Tried depressing the brake pedal, no change. Tried with the engine running and turned off, no change. The gear shift cable, from the dash to the trans seems to be grinding. With my hand on the cable I can feel it grinding, vibrating, as the gear shift is moved up or down. Can this cable be removed and greased or does it just need to be replaced?