would the konkave bearing they sell at yoyoexpert work for 888?
Yes-the one I have in my 888 works just fine. Just make sure you get the same size bearing that you already have.
The “duncan sized” kk bearing works very well in my 888! That should work fine!
Then you probably have the small bearing 888. Most of the 888s are large bearing (not duncan sized), so for them the konkave bearing on YYE shop would work, since it is large (.250 x .500 x .187 inches).
It depends. If you have a small bearing version of the 888, then get a size “A” konkave bearing. If you have a large size bearing, get size “C”