I had a HELLUVA time with the install, but it was my fault for not properly heating everything up before tackling it. Heat up and you'll be fine... and be careful not to over-tighten ... those screws were born to strip.
That said, I 100% would not be able to do this Top Gear gig without these folding props. Most days it's, drive to a spot, set up FAST and get in the air, then while I'm still flying back to the truck after cut, crew is all moving to the next spot. I land, jam it in the landing mode case if we're in rough terrain (often) or sit it on top of the case in the vehicle if the roads are smooth... drive to the next spot... jump out and set up while the AD is already on the radio with, "is drone up yet?"
These things are a life saver. that 30 seconds on each end, plus saving the wear and tear of installing and uninstalling props each time is a must for this kind of gig.
Also, had an unfortunate flight into a hillside the other day... was on a long lens I'm not usually on and misjudged position as I was flying backwards full speed while getting a great shot. Suddenly screen said, "Drone Disconnected... Returning to Home"... never came home
Drone was HIGH up the mountain in Cinder Hills... had crashed straight into the lava gravel at full speed.
Only damage was a slightly cracked leg and minor prop damage (plus my ego)... 100% attributed to the fact that those props are tough as hell and they also fold up to absorb an impact like that.
Was able to keep flying on those same props no problem. (I have ordered some new ones and will retire those to "backup" status, but still, they saved my ***)
Can't recommend them enough