Could you upload the base as a .step file? I'd like to modify it to my liking, and since you've already gone through the work of modeling the shape of the Flair's base, I thought asking can't hurt :)
I would also upload my altered Version here, but I dont want to go buy a mirror if I can produce one myself to my liking (edited)

Printed the threaded part with a brim.
Everything fits very well.

Nice little tool set to create some bricks ;)
Thanks a lot.
Cheers

If somebody else is wondering, this works perfectly with the mini, no scaling needed. Thanks for sharing this :)