Before I consider borrowing a gearbox, would anyone have any ideas as to why I can't get reverse? It's a solid hit when trying to get reverse but won't allow me to get it into the gate. I can get all forward gears fine and even 5th hasn't changed. I've checked the check ball valve and that turned out fine though it was a possible issue. Also checked all shifting components and they are ok too. Hoping it's something simple but if it comes down to pulling it apart then that's when I'll swap it over and get someone to pull it down.