Hi Magfan,
I started with the tweeters to the outside for no special reason.
The currrent instructions for the 1.7's, just two sheets of paper with a thank you letter on top, no longer recommend tweeters in.
They explain how to orient the speakers based on serial numbers and that the listener should determine what sounds best to them. They do recommend toeing in the speakers to the center of the listening position and advise against them being parallel to the front wall for better phasing.
So...tweeters in, tweeters out and then back to front...tweeters in and tweeters out...and that is before any mods!
Second day of listening - a lot of bass that you can cleanly hear and differentiate instruments.
Still amazed at little details that pop out at you. On some Stevey Ray Vaughn cuts, the hum of the guitar amps is clearly audible for what it is at the end of the tracks. On a Joan Jett CD I clearly heard fingering thta wsa not audible before