Hi, Chaps...
Is this Erosion or Corrosion? as the two are not the same, pic would be nice.
I had a worry with the blades on my 47 when I aquired it, even though they are stainless they looked badly corroded on the leading edge, however they turned out to be fine, and a coat of paint cured all... (I must add the paint cost 5K!!!)
I was supprised how quick the paint goes mind you, fly through any rain and woosh its gone...
Kev.