I'm pretty sure they are washerless - you might be waiting a while
Do you happen to know if your lav faucet is Durafaucet or Phoenix? Mine is Phoenix in the lav and kitchen and was hoping the peeling was isolated to Durafaucet
As I was replacing the parts that originally peeled, now I see the upright arm ends and shower head holder is also peeling. Redwood said I may be using too harsh of a cleaner. I said they should be able to stand up to any non-abrasive household cleaner. My brushed nickel Oxygenics shower head doesn't seem to have the same problem - maybe DuraFaucet should look at their process for creating a brushed nickel finish on plastic.