Summary

I took Boothy's amazing Hydra fan duct system and made the BL Touch mount on the left 5015 duct mount more stable/usable. I basically added some outside rails to make sure it stays vertical considering it is held by a single M3 bolt and nut.

I've only included the 2 versions for the left 5015 duct that I modified; you can get the rest of the design from Boothy's main page:
https://www.thingiverse.com/thing:4062242

Print using Boothy's recommended settings:
All parts printed in PETG @ 0.2 layer, height, 30%-40% infill and 3 perimeters. I did not use supports.

Note, I did not do the right side ducts because that's just wrong (and you run into X-axis end stop issues). I can maybe throw together a similar solution for the 4010 blowers, but I don't personally use them.