Need help, I have a whining noise when I’m driving in all gears but 4th gear. When I depress on the clutch it doesn’t make that sound. Only in 1st, 2nd, 3rd and 5th gear. My clutch is fine. A few people have said it’s my throw out barring and then someone said it’s a counter shaft barring. I called the part store and the guy had no idea what I was talking about. Do I have to replace all the barringor just the one going out?? It’s getting pretty bad now so I need to get whatever it is replaced. Any advice??