New to Harley so. I bought my 01 RKC used at 1000 miles late last fall. It had never had service so I changed out fluids and did the 1000mile service. It is now at 4000 miles and down a quart of oil. I have had other bikes and with that low mileage never burned a drop. Is this usual or should I be worried that the previous owner did a real hack job during the break in?