Just serviced my 1098s from 2007 and had some great riding this weekend. No metal in oil, everything runs fine, shifting fine. No issues but a horrible noise have appeared. First I thought I had to much slack in the chain but so is not the case, the sound seems to be coming from inside the transmission/engine. Bike is on paddock stand and in neutral, knocking noise when spinning output shaft. Has anyone seen this before? Sound like something is loose. Since everything works it doesn't seem to have gone boom boom. https://youtube.com/shorts/j27gw7yUcm8?si=GUerpwc6oYaBd8J6
bent or loose selector fork comes to mind first. It might be worth putting a light load on gearshifter (not enough to select a gear) up or down to see if anything changes.
