So, I wasn't patient, I ended removing all of them. Took a while but did it. Takeaway. I'm sure there is bearing qualities... The cleaned out bearing will spin fro rougly 2 min 30 sec and do spin
way more smoothly than the one I had before. They play way better too.. The top is zipping around with the string, makes is so much fun.. BUT...
It only takes a couple of drop on my not so hard wood floor and the bearing starts to get very noisy & way more rough...
Now question, is there any bearing that would survive dropping to the floor or that's just how
it is with bearing tops.
Cheers,
paxl