Hi guys, I have a 2008 YZ450F and plan on doing some bearing maintenance this w/e after noticing a few things last weekend. 1. Front wheel bearing has a bit of play in it, plan to replace these (I know how to do this). Does anyone have the spec's on these front wheel bearings / seals? Bike shops are a rip off when it comes to selling these in aus. 2. Rear wheel bearing has no play but the seals are leaking. I take the bike out for some bush trail riding twice a month, is it worth just letting this go until the bearing inevitably corrodes? I plan to replace it as soon as their is any movement in the side ways movement rear wheel. Will this have any consequences if closely monitored? Specs on these bearings would be appreciated as well! 3. The bike stem is in good shape, turns smoothly. I have notice some oil leaking out of the stem occasionally. Does anyone have any good videos or instructions on how to rectify this? Why would this be seeping out oil from the top?