Just about to fit a nice new Michelin Pilot Active tyre to the rear wheel of my D Comet, thought I would check the wheel bearings and brake linings whilst the wheel is out, all OK sort of, but I note one bearing has been running a little dry and there are signs of discolouration due to rust, first time I have gone in this deep since purchasing the bike, I also notice that the bearing cups (narrow) are both spinning beautifully in the hubs, but without any perceptible play, almost feels like a perfect bearing, but I guess it would be very unwise to leave it like this, any suggestions on the best grade of Loctite to use for this problem, or is this route not advisable, I will be reluctant to break the wheel down to fit a new hub if it is not necessary.