Good memory FC!
I bought some from MEBears and populated my Albys with correct oilers. I honestly haven't seen any since (not that I've looked).
I had an extra one that I put in the pay it forward box. Someone out there got it. For slings I'm in the same boat as you. Using some well worn Chinese on the Albys but would love to get a 'more correct' Alby sling for it. Just haven't seen any pop up, they are getting to be as difficult to find as Romy dog collar slings.