Yep, I worn out the brown stones on my 203, too. The corners ended up being small flats and it was worn unevenly. You can get replacements for around $5 each. Check the dealers on BF's links page. You can probably get them direct from Spyderco Factory Outlet.
By the way - Sal mentions this in the 204 training video and it is normal. I sharpened about 80 knives before mine needed replacing.
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Knowledge without understanding is knowledge wasted.
Understanding without knowledge is a rare gift - but not an impossibility.
For the impossible is always possible through faith. - Bathroom graffiti, gas station, Grey, TN, Dec, 1988
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