When I lower flaps 2 on approach in the amphib for a water landing I am getting a horn sound. If i lower the float landing gear, the sound goes away. Is there a fix for this?  

Solved the problem. I had purchased an add on turbine sound file that was supposed to work with many aircraft including the Kodiak Quest. ( 1 x SONIC SOLUTIONS - PT6A SOUNDPACK FSX P3D ) The instructions were to copy over the existing sound folder in the aircraft file. I noticed that not only did it have some turbine sounds but also had a gear warning horn and it's own sound.cfg file which overwrote yours. This is where the horn when setting flaps two came from. I had backed up your sound file, so I just went back to using it and the warning horn is gone.