I know this has been a topic on here countless times. Trying to find some advice on what could be wrong with car. Sounds like a winning or spinning noice in gear box area. Checked and refilled transmission and diff fluids and they were as clean as can be. I feel like it is most likely a bearing of some sort. How hard is this to narrow down? Replace? Is it expensive? Can I do it myself or should I take it somewhere? The owner before me replaced the clutch kit including clutch, pilot, throw out, pressure plate. Very recent, but I feel as if he didn't do it correctly or somthing, seems weird for it to go out so quickly again.