My Gyro's now 12 years old and apart from having its electronics/springs replaced (new DC motor/HR Power supply/new de-coupled springs etc) the rest of the thing is as it left the factory. It's 90% Orbe, apart from the platter (there was [b]no way[/b] I was going to lose those funky gold weights!!) :D Just wondering if any of you folks have changed the main bearing oil? Mine has the later oil-pumping bearing but with this many years' use one would have thought it might be worth doing? If anyone has, what's the best way of going about it? Thanks for any help. :)