Some of our forum members have torn down the 2002-2004 tranny, and found that first, second, fourth and fifth gears' clutch packs looked great, and could probably go right back in (of course, once you've gone that far, you might as well replace them with fresh parts).
Third gear is a bear. It doesn't have to contend with severe loading from the tranny output side (like first and second gear do), or severe loading from the tranny input side (like fourth and fifth gear do) because it is the "middle gear" in our 5-speeds (which is why it is a somewhat smaller clutch pack than its siblings), but it still needs adequate flow of ATF for heat exchange and lubrication. This is where Honda fell short.
See my second post on this page. It details the problem and has additional links:
Odyclubbers Hash Out the 2nd Gen Tranny Problem
Sometime in very early 2004 Honda released engineering drawings to correct the three causal problems for early third gear clutch pack malfunction. This is why 2004's, for the most part, have not endured this problem to the same extent that 2002's & 2003's have.
OF