Anyway, I see a way to clear up Argentskin/Cold Ironhide/Mithrilscale a bit, and make 'em look a bit more professional.
In the first two, just replace "also" with "furthermore". Sounds better, means the same thing.
For the Mithrilscale line, I'd advise a rewrite like so...
For Grace and Mastery, I'd add a comma after "[...] Evasion ability", in both cases.Mithralscale [Mirran]
Benefits: You gain a +2 racial bonus to Climb, Jump and Tumble checks, as well as on all Reflex saves.