Only put it together yesterday so only spun it up a 100yrds outside the house, so have yet to see how good the JD makes it, I've also changed gearing to 14-52, one smaller one tooth larger on the back, with a new chain. Bought a Supersprox rear and the rivets catch on the chain slider, and it appears to have tight spots which i'm not happy about.
Anway the bearings were looked at on the suspension where it has grease nipples, there was smelly water on the bolt, but bearings were fine, regreased and put back. As a note, when changing the bottom shock bearing, my parts catalogue showed it as one item , but dealer 'realtime online catalogue' showed it as two ( inner pin), beware, you will need both parts. Husky wanted £26 for bearing, I bought it from local Bearing Shop for £6, and am having a few of the inner pins machines as spairs. This had water marks, and both parts needed replacing, same for frame/swinging arm bearings, when I reassembled and put back on the frame protective covers, on the inside are rubber seals, I also smeared them with silicon, to help seal.
Its 21 months old, about 1200 miles, used in uk weather. Covering water crossings, caked in mud, dust, you name it, and a lot of pressure washing, as its the only way to get it clean, and all these areas hold mud and take a lot of clearing especially front sprocket.
So in fairness, its not done bad, but its not a bad jod to disassemble and re-grease/ inspect at more frequent times, they won't last forever.
I have posted about this when I was asking for advice about the bearings, but didn't get much response, I guess it hasn't been an issue, or an undiscovered problem for the majority go 449/511 owners.