welcome to the forum, could very well be the steering head bearings, may want to also look at wheel bearings while you're at it, bearing spacer and axle also just to be on the safe side. check the front rotor for any type of damage. you can do the bearings your self, they aren't that hard if you've got the tools for it. AllBallsRacing has bearing sets, priced well compared to getting stock ones from HD. there's lot of info on the forum, go to the "General Motorcycle chat" forum and you'll find several informative threads for those new to Buell motorcycles. you can download the service manual from either the link just below the Buellxb.com header above or from buellmods.com.