Got to love the WWW for collaboration:
1) Trent from Axiom replied saying that knocking down the trebble helps tame problems he has one with particular recording.
2) I use
JRMC for my HTPC software (it is very very good) and amoung the many features it has an EQ setting that one of the user/devs have then made a plug in that lets you assign custom EQ settings to different tracks in your DB. I've created a custom EQ Setting I caled "Sibilance Correction" that I can then apply to offending tracks...EG. I've found that Infernal's "Paris to Berlin" hisses like a snake but the following setting helps reduce that (I'm happy to experiment with other band changes should there be any suggestions)!
This (hopefully) means that I can target the offending recordings rather than making a global setting change OR permanent HW mods!
Thanks
Nathan