Back in January, I took delivery on my P2 and in no time had busted a set of props. The package deal I bought came with some additional props. So when I replaced the props, I thought that they were all the same pitch. It was not until I began having flight problems, such as flying in a straight line, turning and such, that I began trying to figure out what could be a contributing factor to the poor flight performance. Eventually, I decided to check the pitch on the propellers and was shocked to find out that I had two 9443's and two 9450's. I had taken it for granted that I was flying the same pitch prop on all the motors. I am sure the Guru's of flight will want to intercede and tell me that 7 degrees of pitch is no big deal and it might not be, but it is something I had failed to inspect and rectify, so this is just a friendly reminder to everyone to be sure your flying the same pitch props, especially if you bought a package deal from a dealer, he might have thrown in some different pitch props in the package.
