Flaps sound louder

one guy told me to use goldwave to raise any aircaft sound volume, so i made the volume 150% which suted me the bestBUT FS when playing this file (it is a file with FLAPS sound) does notdo what it should.let me epxlain. when i retract flaps there is a flaps starting sound thenLONGGG flaps retracting sound and the stop sound. but after making the filelouder FS just plays the file again and again for the needed period of timeand it doesnt STRETCH the sound as it should to make that middle periodlong enough to fully retract the flaps. instead the file is played 4 timeshow to fix that?