I found a couple threads over at Honda Tech maybe they can help a little.
http://www.honda-tech.com/zerothread?id=1232125
http://www.honda-tech.com/zerothread?id=1217310
http://www.honda-tech.com/zerothread?id=260947
It sounds like one of the main causes of thrust washer failure is the tranny or clutch. Also make sure that when they are installed the groves face the crank and not the block.