Tannoy anyone? Cheviot Legacy vs. Stirling GR

You might try asking on 'The Art of Sound' forum. Some Tannoy savvy guys there could probably assist.

I’m on my 2nd set of Tannoys from Upsacale audio. Currently Turnberry GR. It’s true: they take a good long time to break-in. I was not exactly thrilled with their sound out of the box. After about 6 months, they “came alive” and now, I love em’. They’re in a 15x19’ room, 8’ ceiling. The bass is good, but might have to do with them being powered by a SET amplifier. DEBRA sub array helps the bass, but the room has issues as well. The soundstage and imaging is fantastic. I spent a long time with speaker setup. Finally, I arrived at the same conclusion as above: apart with a good amount of toe-in is the ticket. 

I like Upscale. Cool people. They won’t steer you wrong. 

Tannoy or Music Tribe won't disclose where Tannoys have been made for the last 15 months, one user on the forum was just directed to Tannoy history, which tells you nothing since 2017. Many suspect production moved to China. Interesting that that dealers in the US have such old stock.  

How hard it figure out what going on with company? Do I need call friend in Parliament? He have linn system but maybe help. Nobody call guy in California that bring speaker to America? My guy task done for good bottle tequila.

So, I took the plunge and my Stirlings were built in 10/21. The expressly claim to have been "designed, engineered and manufactured in the United Kingdom." I made that a specific part of my request. That said, I'm a little paranoid over that. Before buying them, I took my Leben CS600 and cabling to a friends with the same speakers built in 2018 and it sounded pretty glorious!

Mine have maybe 75 hours on them and are still squawking away even with the treble energy dialed as far down as they can get. Also, wiring them to the LF and jumped to the HF helped a good bit. The distortion is definitely bie present on everything  mildly improved, but disappoint on most and verging on unlistenable with many.  That also lends to them not feeling well integrated across the spectrum with the midrange getting shortshrift.

Can anyone (@veerossi ) offer experience on approximate time to get broken in and how far behind the nagging tweeter might be from the bigger diaphragm? And whether my experience is similar to theirs? 

Once the ice and snow's cleared a bit, I could take my Stirling to my friend's digs to compare and contrast, too, I suppose....