The FR pursued this a bit back in September.
(See http://www.freerepublic.com/focus/f-news/1207871/posts )
Kerry reported that his pay records etc were lost, but it makes sense that if was given a dishonorable discharge his pay would have been revoked.
Secondly, consider this, if Kerry had an honorable discharge from the reserves, these doucments would be forthcoming.
Also, I cannot believe that there is not one person working in the Defense Dept all these months who has not casually peeked at the 100 or so pages of Kerry documents there, that have not been released.
nick