Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
I have a DX Racer "racing series" chair for the past few months, I've honestly really liked it, granted I don't sit in it for 8 hours at a time, it's comfortable has nice lumbar support. But I think you really need to test a bunch of chairs before buying if possible.
Just did a build in an InWin 303, same mounting system, haven't had any issues so far, same thing, moving mechanical drives from a horizontal to vertical position.