Is there any other way to use classes to an infected server. In my classes, i have modded items(Scrambler weapon, Claymore Weapon) so the .dsr will not save the mods, and the mods make the gamemode. So is there a way to bypass the .dsr or use another class system?

Well no actually because it's set in the GSC... if NTA can find a workaround for the calls then it MIGHT happen. But that's almost impossible to reroute GSC stuff.