Has anyone removed tarnish from Gallo tweeter?

I have a pair also,I bought as a demo pair and just got them back from the dealer,I sent it in with a blown mid range.They completely fixed the speaker and brougt it up to original specs free of charge, no shipping cost.This fingerprint issue as I call it, Caused a real problem for me.I only had them a short time when the mid blew.In closer inspection I noticed the fingerprints on the tweater and felt it was tampered with at the retailer, due to the cage how would you get fingerprints on it to begin with unless you had it apart?My retailer told me that he was told these are hand built and that all will eventually show signs of this(only one of mine shows this the other is perfect)He was told me they are fingerprints and they show up after due to the materal used.I think that is "bunk",excuse my language.Why would you not wear gloves then if that was the case.I got a great deal on these speakers and they sound terrific(Although it was hell to wait a month for the repair)I half expected it to come back with a pristine looking tweater,But it DID NOT.I am sure if there was a way to remove it, they would have as I complained about it directly to them.I like the look with the covers on anyway so you can't tell.I thought for sure I was a junior detective finding the fingerprints,Product tampering,Blown mid cover up.Real CSI stuff. LOL! I am going to leave mine alone and enjoy "Definately not Tarn x"

Just checked the (growing) blotches on mine. They don't look a thing like fingerprints. The tweeters will be uniformly brown before long, just like the color of my Due's. Dave

I've had mine for probably about a year now, and they definitely show the fingerprints. My guess is that the oils transmitted through the hands accelerates the tarnishing so that the fingerprints show up first. Over time, I'm hoping they become more uniform, but as long as it doesn't impact the sound (doesn't seem to), I'm fine with it. Just one of the quirks of a very unique speaker.

SO, the big questions: is there any reason to believe this tarnish/patina thing affects the performance or longevity of these tweeters?

Not according to Gallo, Joebone. It happens to all the CDT tweeters in due time.