I contacted TW and they said to try fingernail polish. It did not work. It appears impossible to get the logo off without destroying the paint. I understand I should get RN4075 rather than true DSE901 (they are different). Somebody told me TW ships RN4075 parts. This makes sense as the my cartridges from TW keep falling out of the "DSE901's" I got somewhere else. And filler in the TW cartridges ALWAYS sticks to the wick--someone suggested a DSE901 wick might push up too far into an RN cartridge. Anyway, any suggestions for a way out of my sad situation would be greatly appreciated. Thanks, ave W.