Guys, I recentley added a set of Monster Ovals, tru-duals, big sucker filter and V&H Fuel Pack to my '07 Road King Classic all professionaly fitted and set up. Have probably done less than 1000-miles since then. I was out for a run on Friday evening and thought I heard a rattle of sorts when filtering through traffic at low-ish speeds. When I got home I noticed that the rattle would appear on the over-run and suspected that the tru-dual shield may be loose although on checking all seems tight. After the bike had cooled I fired it up again and after approx a minute or so the noise appeared again on the over-run and sounds more of a chain like type of noise/rattle coming from the lower right hand side below the air-filter housing or thereabouts, just tried it again after getting home from work and it is still the same. I do get a bit of popping (back-firing) on the over-run however, nothing to excessive. I think the best bet would be to have the bike recovered rather than ride the bike into the dealer and get them to check it out. I'm just curious what this may be?