I think my 3rd 4th and 5th all make the annoying humming noise!!! I noticed it after I was trying to shift to 4th racing a crotch rocket and hit 2second instead... Yea barely recovered that one, I was winning the race too but he safely flew by me after that.... I have had some serious bad luck with this hurst shifter cause it's HARD to get in gear but it sure looks good!!!