My new 2013 GTL has 400 miles on it. I cannot detect a knock of any kind. She's got a severe whir, which I think is normal. The shift has a serious clunk, which I can lessen with some care. I seem to be able to find neutral about 1/5 time when I shift between 1-2 or 2-1. Finding neutral with my 98 Road King was next to impossible, so I'll just work with the shift.