How to tweak a system.

I said that I would start this thread about a week ago. This is where you don't have to be rich to improve your system. Let me start by saying that I'm pretty good at anti-skate. This doesn't include unipivots or thread and weights. Look under Mana Acoustics Forum, "How to setup a Mana Table by ear". I also want to mention(and this may be pertaining to my cd player), that if you get digital glare, try lowering the volume. Volume is misunderstood. There is a certain volume per disc, or lp, that is correct. No it is not the volume that allows you to hear something that you know is there. My question has to do with speaker placement. I'm hoping that someone who has similiar expertise to my anti-skate and volume statements, has something to say about speaker placement. Let's go guys! We need good information here!