I've had my 990 for about 2 months and so far I love it. This weekend I tried the auto calibrate as well and it didn't work for me in all cases. It did a fine job on the center and rears, but the mains were way off. The mains are symetrical with the listening position and 11 feet each from it. The system said the left was at 12 feet (not bad) but said the right was at 1ft! So out came the tape measure and RS SPL meter and quickly fixed the parameters.

I also did some playing with my DEQ 2496 RTA to fix some bad room modes, but after reading some other posts about the x-over settings and Large main settings (I don't have a sub), I need to revisit how that is set up. That may fix some of my bass issues. The mains are JM Labs with a transmission line design so they are very position sensitive, and produce a lot of bass. But in my new room they get very annoying in the bass region, too much bloom at certain frequencies. Sound like the SMS1 is what I need as well. So much to try.....