[Closed] White Industries freewheel - do they wear?

So I notice my Uno ring is a looking a bit worn, and the chain is getting loose pretty soon after each tightening, so I've ordered an Alu chainring from Homebrewed. (cheaper than Middleburn :))

Is there any way to check if the Ti teeth on the White Industries freewheel are worn? On the geared bikes, I replace the whole shebang in one go, but I figure this should last longer than a cassette and they [i]look[/i] fine.