Hey guys! I picked up a decent 250ex for my son for Christmas. It cleaned up well (other than me forcing water into the crankcase breather via the airbox, before I realized where that "drain" went ). I still need to do some work on the rear brakes, they seem to drag a bit, and the cables stick. But, the main question I have......the collar that covers the left side of the axle, and bolts to the swingarm.....where the axle comes out of it, there was a thin metal collar (looks like a bearing shield) free wheeling loose on the axle, and I see the seal at the end of the axle collar is dripping a bit of oil.....can I just replace the seal at the end of this collar, or is it dripping from somewhere farther inside the final drive housing? The circled area in red is where it is dripping a little, and where that shield came off and is loose on the axle at this point.