Last night I changed my front wheel bearings and seals on my 06 450. With the slop in the front wheel gone I wanted to confirm how nice and solid the front end was now, only to hear a rattling noise when I gave the front wheel a knock with my fist. I thought at first I missed something when I put the front wheel back on but after repeatedly recreating the sound It seems to be coming from the forks. It sounds like the spring rattling inside the forks. I have no idea if this is normal but it doesn't seem like it would be. Sorry if this sounds stupid but I assume when you give the front wheel a shot with your hand you shouldn't hear what sounds like the forks springs rattling.