Not sure how useful this post will be to anyone with a 1.1.1, as anyone who got an earlier version has burned in effigy and taken out a contract on any retailer that sends old stock. But for some of us with older Phantoms, the non-self-tightening motors mean we can't use the integrated-nut props. Finally, DJI has released a version of their 9" 9443 props for holdouts like us. As mentioned earlier, I got several sets of these genuine DJI non-self-tightening plastic 9443 props ("knockoff" versions of this prop have been available since the Vision first shipped). I've been looking for these for a while, but finally jumped on them when I found them for the standard price of $15/pair and genuinely needed "upside down" props for the bottom motors on the Y6. Of course, I couldn't go without testing them on the Phantom. Carbon fiber (knockoff) 9443s: AUW with carbon fiber props: 1282g DJI NST 9443s: AUW with DJI NST 9443s: It's a windy day that I normally wouldn't fly in, but just hovering in the yard fighting the wind is fine. I'm aware that DJI claims the plastic props are better for forward flight because the flex of the material acks as a beneficial mechanical hinge, so I'll need to test constant motion and aggressive flight separately. But for now, it's just hovering. Flight 1: DJI NST 9443 (plastic): AUW: 1294g Battery: Maddog 5400mah 3S2P LV settings: 10.60/10.40v Flying style - hands off hovering Landing: 18:32 at 10.60v. (11.0/11.1v resting/5min voltage) Flight 2: knockoff NST 9443s (carbon fiber) AUW: 1282g Battery: Maddog 5400mah 3S2P LV settings: 10.60/10.40v Flying style - hands off hovering Landing: 18:50 at 10.60v. (11.0/11.1v resting/5min voltage) Honestly, within the margin of error. I don't automatically think the knockoff props are better (though they are ~12g lighter, you can decide whether that correlates to an 18-second difference), but I had always wondered the knockoffs were significantly WORSE than the genuine DJI props. It seems like they're not. I threw the NST props onto the DuBro to check balance. They were close, but not perfect. Much better than most of the knockoffs I've gotten. I'll probably sand them a bit to get them just right. An interesting not, they're also not quite as thin and flexible as the gray E300 self-tightening 9443--those are actually so thin they're translucent! But mainly, these are for my Y6. And I love that DJI made them without a top collar to prevent you from accidentally installing them upside down. Because on the Y6 the bottom motors need upside down props. I can just pop these on without modification, and I love that the fit is so snug that I can literally fly the hex without prop nuts installed. The props push up so they won't come off even if the prop nut falls off. I think these are going to stay on the Y6, and the carbon fiber 9443s are going back on the Phantom, where they've been living for the last few months.