I stripped out my front wheel bearings today to regrease them on a Bontrager Nebular wheel. These hubs hadn't been touched since the bike was new. It looked like there was a bearing missing on both sides of the wheel. When I did the rear wheel a few weeks ago it had a full complement of bearings so it seems strange to not be the same on the front. Never having come across this before, and before I buy a new set of balls, could there be a reason for leaving a gap in the bearings. I have done nearly 3000 miles on the wheel without bother but now I have seen it it is niggling me.