Recently, when I shift from 3rd to 4th in the 4000 - 6000 rpm range, I am hearing something like a buzz or whir sound as I shift. Clutch pedal is pushed and the sound happens as I shift into 4th.

The 4000 - 6000 rpm range is my normal driving range. Have not tried it at a higher rpm.

Has anyone experienced this? It is new to my car and I want to see if there is anything to be concerned with.

Thanks.