Review on Godeson Plastic Knurling Upgrade Corrosion by Alec Winsor

They look great on first wear but the black has faded on all and they are now a blackish/copper mix., that 2 of them appear to have some corrosion and are stuck to the valve stems. Now that I've read more reviews this seems to be a common problem in colder regions where salt is used on the roads. I don't know how to take them off and I'm not happy if I have to pay a store to take them off. I grew them in January so they are only 4-5 months old.