JD,
I feel your pain. My STI Edge never shreds buffs. In fact, I forgot about chaging buffs until this post and I wager I have at least 5000 since the last one...... The Kimber just ate them. I didn't find the Kimber overly sharp, but I think one small bur can really hammer a buff to pieces.
If you wish, I can take a pic of my slide and the mods done after the first of the year and post it for you to compare. Internet logic is kind of "fuzzy".