No problem. Here you go.
Edit: Litster's original files had bugs in the orientation of Costar stabilisers for 2u thumb keys - I fixed them and uploaded a new archive.
Know that the design is for thick plates that the switches can't clip to - they are only friction-fitted in the plate, mounted vertically only to the PCB. LMK if you need help with doing any mods.
BTW. An alternative to Litster's case is the one by
FalbaTech: Proper 1.5mm metal plate and a machined white plastic case that is smaller.
Actually, you don't even need any plate with FalbaTech's case. The PCB supports PCB-mounted switches and stabilisers for the 2u keys are optional.