[Loud Vibration Noise in Corsair 5000X Case]

A few months ago I purchased a 5000X case. It's perfect for what I am after! However, I have two HDDs in the bays at the bottom which are usually quiet, but occasionally I get an awful vibration sound coming from the bottom of the case. The only way to stop this is by placing my hand under the case and pushing slightly upwards. This stops the noise but will return a few seconds/minutes after I remove my hand. Any ideas of how to stop this?

[ML140 Pro RGB 8 LED varients]

Heyo, was just wondering when the 8 LED variants of the ML140 Pro RGB (the ones that come with the newer AIO coolers) will be released to buy? I've just got a 5000X case and would love to whack some in there with it, but only the 4 LED variants are available?