Please help me to better understand setting up my speakers. I've got M22's as my mains, an EP350, VP150, and QS8's (just got 'em). I've got a Yamaha RX1300. I've got the mains set "small" so all bass should go to the sub. When I set the center to "large" (makes sense to me, with the 150) it seems like ALL sound goes to center, and very little comes from the M22's. I haven't played around with the rear surrounds yet. Is there any generalizations to how I should consider these Large or small? I'm no audiophile, I just want these speakers to sound as good as they can. Thanks a lot.