You're welcome. But, there are many DM. It's just that there's only one DMS. Only difference, as far as I know, is that DM is ranger only and DMS can be equipped by all classes
I can sell you a v502 for 5pds or 1dt and I'll give you a PD
Also, DMS is a unique item that only one person has. They're not allowed to trade it afaik
I think you have to talk to the computers in cave 2 (?) in the right order to get all the spawns and stuff. I'm pretty sure I got two of the other secrets.