Gavin1977
Anti-Cables make great products, I'd give Paul Speltz (founder and highly thought of) a call to discuss your issues and see what he recommends
Cables can take hundreds of hours to break in, I'd wait for 250 hours or so before making a final decision
Fuses - I'm using rather inexpensive fuses, ACME Audio Ceramic silver cryo fuses. The black fuses with CFC coating actually were an improvement, especially for their inexpensive $32 cost. Worth a try especially at that cost.
Funny that they seemed to increase inner detail, but also smoothed out the highs.....and reduced sibilance or brightness. Like I said, cheap to test....but they do take about 100 hours to soften up