I am breaking in a new 80 Evo and have been babying it for about the first 200 miles. I changed over to AMSOL at 50 miles and other than that everything has been easy going. I decided to put about 300 miles on it yesterday and about half way through I noticed a strong knock happening. When I'm at 60 and let off the throttle it starts knocking loudly from the front of the bike. It also goes away when if I pull in the clutch. Once I got home I noticed it is also doing the same thing when I shift from 1st to 2nd and again from 2nd to 3rd. It never did this before yesterday. I have heard that these motors tend to knock at around 55 at certain RPMS but since it never did it before Im nervous about it doing it now. Thanks for any help.