I'm riding a 96 fxds-convertable with about 17,000 miles on it. I'm getting a ticking sound that seems to be getting worse. I've tried to pinpoint where it's coming from and it seems to be the front of the primary, but I'm not sure. I'm having no performance issues as everything seems to be running fine. When the bike is at idle the sound is slight but seems to become more pronounced when in gear and moving. At idle I can rev up the RPM's and it doesn't seem to get much worse, when I'm in gear and moving it does. Any suggestions?