Not sure if this was asked yet: is the whine new, ie did the sounds change/develop over time, or been there all along? or if the car is new to you,I agree with the straight cut comment.
I put a straight-cut Quaife in my car from new, and as expected, it whined a bit in all gears except the direct, and neutral whine was less than "loaded" in gear whine.
Pop the top cover off and look inside.....