PCIe card backplate

Got a SATA expansion card for my PC, but the metal bracket that came with it didn't actually allow for the card to seat fully in the PCIe slot. Didn't want to measure the hole distance exactly (and inevitably screw it up *fner fner*) so I put a wide slot to mount it to instead.

Tried going with 1mm thickness initially, but all the prints came out like hot garbage, so upped it to 2mm in most places. Could probably be improved; I've attached the file, so have at it.