Thanks for the suggestion! I may have to spring for new ones if worse comes to worse. Purely due to the fact I will probably screw something up in the rebuild.

I'd say I have about 20k miles on them over 5 years (with 10k coming in the last 2 years). I will admit, early on I did not re-grease as frequently as I probably should have. Not really sure how long I should expect these to last.