Quick question about bearing type in 500mx...

So my Lhs didn't have the small bearing in ceramic, but did have one ceramic in the big bearing size.

So I used a grey rubbered sealed boca for the small and a ceramic for the big..

I noticed when I replaced the bearings, the small was a steel shielded bearing; is rubber ok?

And i also put green thread lock in the inner race of the small bearing and tapped the shaft down till there was no vertical play.. It's the small one I put thread lock on right?

Thanks!