Stock Slipper!? I'm surprised you haven't melted the middle out of that yet. LOL I've seen it happen before.
@Aqwut - Do you know what size the bearings are? I dare you to challenge me on finding them.
Give me the dimensions in mm. Like 6x14.4mm If you already have one apart that is. Check both the front and the back bearings, they could be different. Not likely, but anyways.