great info guys.
Ive been thinking about going back to grease. they seem to last longer.
Ive noticed that on a $40 set of bearings that brand A seems to have less play in the bearings versus brand B. I like brand A.
I like the ultrasonic. I have read that it does damage the bearings over time but I havent seen it and I use it anyways. I just bought a cleaner that is way too big. I did just read that I dont have to fill the whole tank with cleaner. I fill it with water and then use a glass cup with cleaning fluid inside the tank. I guess that glass is invisible to the ultrasonic energy.
Im going to stop overthinking the bearings and pitch them after a quick attempt at cleaning them.
thanks guys.