Extremely annoying hard drive

[mfcfbro]

Okay so I have a pretty silly problem. I have been running a set of hard drives in raid 0 for some time now. They are both 100% operational (I work in a computer shop and have tested them). However, they seem to resonate with my case. I have a Fractal Define R4 Blackout, so each tray has rubber grommets already. There is really no chance of me suspending the drives as I have 6 hard drives and one ssd in total and lack the room. With every drive removed except for those two the noise persists, but removing them fixes it. Pushing on the case tends to temporarily fix the issue for a few seconds to maybe even a half hour. I have checked every screw in the entire case and nothing is lose at all. This may not be a huge issue, except I do use this PC for audio and specifically designed it with water cooling to be nearly silent.

What I am wondering is if anyone has ran into this issue and have you been able to resolve it without suspending your drives?