You aren’t the only one selling things. I machine tweeter lenses called MAHL tweeter lenses as replacements for two of Klipsch’s tweeters. I just never pushed them here because this is not a very big Klipsch site.Look up MAHL on ebay to see.
Looked it up, pretty neat stuff. Trying to get a better impedance match on the air vs the throat and dome?
machining the throat/horn is a bit of a bear, I’ll wager. that’s some painful bit of CNC work, probably with some notable finishing work. (I bought a 5 axis CNC set up a while back)