Endgame/DD Loot needs some attention

First, a little background on myself and my guild:

• I play in a small guild of 6-7 active players. We usually play in groups of 2-3 to do various activities.
• We've managed to build a couple of carriers and spice gatherers and are doing OK with melange gathering. We have quite a bit now in storage.
• We're all approaching level 200. One of our players hit 199 the other day. Myself, I'm 179 and there's a few others in the 180s.
• We've each completed all of the quests available from the various NPCs and the class trainers. We've each got every class fully unlocked.
• We routinely clear/farm the research facilities in the PvE zone of the DD. We've managed to get just about every plan available that drops in those.
• We play Harkonnen - which has turned into an issue. There's not a lack of Harkonnen players, but there are a couple of dominant Atreides guilds that are serious dupers (or at least they were) that have near unlimited resources. They've also somehow avoided any significant bans or repercussions and they dominate the Lansraad every week. The last several weeks in a row have had those 2 guilds take every house without Harkonnen being able to get a single one. They always target the houses that request resources first.

For the last several weeks, it feels like we've hit a wall. One of the major issues we've ran into is that we've been unable to obtain any gear beyond what the PvE facilities drop in DD. We've completed the research centers up in the PvP zones multiple times (with significant difficulty) but every time we do, the gear has already been claimed. We're flushed with most resources, but the two things we lack are the plans for better gear that drop in the research facilities/downed ships in the PvP zones along with the spice infused plastinium that drops from the same chests. We've been unable to find any kind of reliable substitute or alternative sources for them. Paying millions of Solari is out of the question in the auction. There's several gear plans listed there that are routinely listed for 50-100 million Solari thanks to the skyrocketed inflation from duping. In that regard, it feels like we're being left out or punished for NOT participating in the dupes, even though how to do them was freely shared all over the place.

Has anyone else ran into the same issue(s)? I'm open to any and all suggestions, tips, or information that might help us over what seems to be these last few hurdles. We all really like the game, but we're starting to get burned out by being locked out of the remaining items in the game that would allow us to compete with other top-tier players and zones. Thanks in advance!