The more I learn from this site , the more problems I find on my bike. I checked the adjustment for the primary chain 6 month ago and it was within 5/8" to 7/8" . What I failed to notice at the time was that adjusting bolt was at the very top of its travel. Looks like I need a new primary chain and adjusting shoe. Here's the question: Can I replace the primary chain by only removing the compensator sprocket or does the clutch have to be removed also ?