I just purchased my first HD, an '09 nightster 1200. My question is; the bike only had 2,400 miles when I purchased it, now 3,400. Is there a break in period when I should be changing fluids more regularly than every 3,000 miles? The bike was serviced by the dealer at 1,500 before I bought it, so I was told. I have no owners manual yet, just ordered it, so I don't know any of the service intervals. Thanks for any replies.