<font color='#000000'>Hmmm...I think all of the problems you mention are more likely caused by your speakers, or the interaction between your speakers and room, than your receiver. Except maybe for the "noise/lack of focus" which could be that your amp is clipping (if you're usually turning the volume control much past halfway or 2/3rds, that's a possibility). Come to think of it, that could cause harshness in the treble, too.
Is your room highly reflective with lots of glass or hard surfaces, or sparsely furnished? That might be bouncing high frequencies (and everything else) around unpleasantly and also causing your "lack of focus". Dampen your room with drapery or wall hangings if that's the case. Maybe add a bookcase or two. And if you have a hard floor get carpeting, or at least a big area rug!
Or maybe your tweeters are just a bit too bright or "hot". Metal tweets often are. Try toeing your speakers out a bit or otherwise alter their position. Sometimes a position closer to the wall helps warm up the sound (but there are tradeoffs with bass, unless you have a sub). Or just turn down the treble tone control. I know tone controls are very unfashionable these days but I think that's one of many silly high-end prejudices.</font>
