Update: Got the motor installed while drinking a delicious cup of cappuccino. Pretty easy actually. Then came the props. Considering I had already removed the other 7 screws, and temporarily put on the folding blades, things were easy as pie. Took the bad boy out for a test spin. As noted above, there is a slight shudder when starting up. Could be because there is more mass at the top of the motor to get moving, regardless after a second or three, the blades were spinning and purring like a kitten. Up stick and away she went. Smoothly and gracefully. Heading out over the sea in southern Helsinki, I decided to put it in sport mode and give it a try. Sport Mode activated and boom, off she went like crazy. First thing to pop up was and error I guess indicating that I was using high altitude props when I wasn't at high altitude. The next error was that I was getting a high RPM warning and the RPM's would be reduced. I am thinking to change the prop positions to see if that fixes things. Once back in P mode no errors at all. All in all, after a case modification (another cup of cappuccino), I am pretty pleased with the purchase. If anyone is considering getting CF folding blades, I would recommend them.