New to the bike. Rode it some. Changed the Chaincase Tranny oil with Mobile1 20-50 V Twin oil. Took a ride today and got into creeping traffic. I was able to use the clutch friction zone to keep me moving . I didn't notice it before as I was either going or stopping. When coming into the gas I would hear the clutch give a little clunk and when coming out of the gas I could hear the clunk back and forth. My guess is the drive chain may need adjustment. I have not been able to remove the oil fill vent cover. I used the Clutch adjust port to fill the case. Any one have information that might help? Is this Normal?