@rkfaberdds strange the Chapman website specifies the tweeters as silk dome and you’re stating they’re titanium…was this a mod? May be I’m looking at a wrong model?
https://chapmanaudiosystems.com/CurrentModels/T-7.html
One important factor to good sound is room acoustics. Room is a component of your system. I don’t see any mention of any room acoustic treatments. If your room is untreated you can’t patch up the brightness with cables. Just keep that in mind.
You might be embarking on a quest for impossible.