I was ridng earlier in the week and at a stop light I heard a clicking/ticking sound coming from the left side of my bike. I was clicking/ticking kind slow but if I let the clutch out to the friction point it got louder and faster. At first it only happened every once in a while and was kinda faint ( I thought I was going crazy) now it is more noticble and is more constant. Any I deas??? The bike still runs and shifts normal.