It's sounds like you're pretty well set after all the work you've done so I'd not second guess yourself with tweaks just yet.
What you need to do is get some long term listening in to familiarize yourself with your set up and then experiment with cabling. Power cords can add more presence and authority than speaker cables or interconnects (in my experience) so I'd start there first: improve the foundation and it'll be easier to proceed from there.
Also, make sure your furniture is optimal and be ready to discard it, even if it's one of your favorites. I say this because I recently got rid of my overstuffed sofa and went with a set of Barcelona chairs and the improvement was more than subtle. I thought that the highs would improve some but it was the mids to bass that got better. Go figure.
All the best,
Nonoise
What you need to do is get some long term listening in to familiarize yourself with your set up and then experiment with cabling. Power cords can add more presence and authority than speaker cables or interconnects (in my experience) so I'd start there first: improve the foundation and it'll be easier to proceed from there.
Also, make sure your furniture is optimal and be ready to discard it, even if it's one of your favorites. I say this because I recently got rid of my overstuffed sofa and went with a set of Barcelona chairs and the improvement was more than subtle. I thought that the highs would improve some but it was the mids to bass that got better. Go figure.
All the best,
Nonoise