Ah, I thought it might be that one. Not to semi-jack your thread kinda off-topic (sorta?
), but I wonder if your install of the brace has thrown off your alignment and could be causing that shake? I assume you installed it with the car on the ground, correct? Have you had an alignment done on it since that install?
I personally would want one that's a single, solid piece with no hinges or adjustment areas. But since that part of the frunk is very closed off and would likely require removal of the plastic in order to install something like that, I guess I'd just have to forgo it.