I'd just like some advise regarding a bank of mine

KibouMichi

Teto's Territory
I was testing over my Kibou and noticed a few pops and noises in their bank, but I don't know if it's serious. Can I get a second opinion? I don't mind rerecording the bank in it's entirety, I recorded it months ago. I just want to know if it's definitely worth the revamp.
Here's some examples:

 

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