send me your email addy through a pm, i will send you some pics of the ones i have had installed.
i had them put in just about every bearing there is. i would post them on here but half the guys dont see
the pics on here, and its just easier to send them straight to you from my phone.

If it's a sealed bearing, don't use grease zerks.
If it's not a sealed bearing (meaning there are separate seals you buy that aren't attached to the bearing itself), then use grease zerks.
Great thing about grease zerks is that you can pressure up a degreaser in there and clean out the bearings, then fill it back up with grease.
Bearing maintenance without disassembly!  Just causes a bit of a mess LOL
Still a good idea to disassemble at regular intervals to inspect the bearings and make sure they're still in good shape, no rust or damage, etc.

Sealed bearings have held up a lot better for me, and not just with quads but on aircraft too.
The unsealed bearings with rubber/felt washers (if you're lucky) or steel dust caps seem to get dirty and fail much faster.
They last longer if you service them frequently, but a sealed bearing will last longer still without any maintenance at all.
If it starts getting worn or the seal breaks down, replace.

Not sure if anyone sells a sealed bearing for the cushion lever labeled as such, but if you take your bearing and/or measurements to a bearing shop they'll likely have a sealed Timken bearing that'll fit.
Timken bearings are also held to such high standards that they're acceptable for use off the shelf in aircraft applications, which is saying a lot about their consistent manufacturing.

Mike i sent you email tonight with pics.

no problem.