I am about to install a trail tech computer on a 2005 XR650R. Searching on the forum, I've found a few people recommended the XRs Only front wheel quick change spacer, which I just received. It comes with a short and longer spacer and a dust cover so you can remove the odometer gear completely rather than leaving the gearbox on and plugging the cable hole in it with the plug that comes with the trail tech computer. There's no instructions with the spacer - but I'm sure the shorter spacer replaces the stock spacer opposite the odometer gear (the other side of the axle), and the longer spacer plus the rubber seal replace the odometer gear assembly. But are you supposed to remove any parts inside the hub before press-fitting the XRs Only seal in place? Or do you just remove the black plastic odometer gear assembly itself?