Green mountain audio eos hx tweeter distance question

I lost my setup manual for the EOS tweeter distance so was wondering if anyone recalls the recommended tweeter distance to faceplate that Roy recommended if seated approximately 8 feet away.  I believe it stated something like 2 5/8 inches but was wondering if anyone knew.  I just moved my speakers and the tweeters moved so don't recall the distance I had them set at and I preferred the setting that Roy stated in his manual.
I know I should also experiment on what sounds best but was wondering what Roy also recommended for best phase accuracy at 8 feet.

Thanks,
Marcello