When I installed my Trail Tech Vector computer, I opted to remove the stock gear/cog drive housing at the axle. Xr's Only offers a spacer and seal to install in it's place to protect the cogs in the hub. I have been noticing that there has been an intermittent squealing sound coming from the front wheel. First I suspected the brake but did not stop when I pulled the lever. Today I rode a few miles and it got so loud I had to turn back. Upon removal of the front wheel and axle, I noticed the aluminum spacer was rubbing/grinding on the 'step' in the axle. I greased everything and reinsalled and no more squeal. Has anyone else had this problem? Am I missing something obvious? When riding, the aluminum spacer spins with the wheel, is this right? Dont mind greasing but there is no protection for this area to keep the grease clean.