I have a 1992 Heritage Softail I bought last year and this is my first bike. I have recently notice a chirping noise coming from below it sounds like it is coming from the primary area. When the engine is in gear and driving at a steady speed of 20, 30, 40 mph etc. you can hear the chirping. When you pull in the clutch and just coast without touching the throttle the chirping goes away. Also, If you are stopped and in neutral you don't hear the sound but if you rev up the engine a little you can hear chirping from what seems to be the front of the primary. Beginning of the year I had bike went through and had the puck replaced and then the chain adjusted also the belt seems to be alighted correctly.