i brought p2 props these one http://www.pitchup.se/dji-phantom2-propeller and i asked if that was the 9450 and they said that they get the newest stuff but they have the 9450 now http://www.pitchup.se/dronare-dji-prope ... -propeller it sems that they get newer stuff little late and it seems i brouht the worse one and the prise is just 10 sek more what should i do? If i buy the new one what should i do with the bad ones they are so similar so the risk is to mix them upp.