Clean your bearings to make them play better.
What you will need is a empty film canister, a solevent (see below), and some bearings that are not playing good.

Solevents: are what you use to wash the bearings in. Here is a list of the solevents rated from 1-10.

Brake Cleaner Fluid- 6
Lighter Fluid-8
Vhs Head Cleaner-5
WD40 -2
Marvels Mystery Oil- 7

Process
Put the bearings in the canister, then pour just enough of the solevent in to cover the bearings. Let them sit for a good long time. 2-3 hours shaking the canister every so often, is what I do. when they are done dry them off, and put one at a time on a pair of needly nose pliers, and spin them while blowing on them. This gets out all of the extra liquid, and gets the rest of the dirt out.
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