Unwanted sound loop

[Sniper297]

Been hacking the hull creak WAV files to add metal groaning noises, some how got an unwanted sound loop that never goes away after the first dive. Might have to turn the volume up, but a click every two seconds is audible about 1:30 in this;



Any sound experts know what might cause that? It's definitely in my hacks, I replaced the stock Creaks_Level1.wav through Creaks_Level4.wav and I don't get it with those. Checked the waveforms and I did leave the same length silence at beginning and end. Originals are 44khz 16 bit stereo and I was careful to save them in the same format.