2004 Mini Cooper s transmission
 

I got a 2004 Mini Cooper s , it only has 80k miles. But the transmission grinds fifth gear, it drives nice but grinds fifth. Does anyone have the same problem? Or knows of anything that can help? I just wanna know all my options before I pull the motor. Also the shifter is knotchy, is that how they all are or is my whole tranny going out?