Hydra remix for Brass threaded inserts

I took Boothy's amazing Hydra fan duct system and made some modifications. I did not have access to M3 Nylocks, but had a bunch of 5mm diameter threaded brass M3 inserts. So, I modified Boothy's design by adding some material where the Nylock used to go and replaced them with space for the inserts.

I've only included the main part that I modified for brass inserts; you can get the rest of the design (and instructions) from Boothy's main page: https://www.thingiverse.com/thing:4062242

There is one location I was not able to use a brass insert, an inside corner of the side duct mount. Fortunately, this is overbuilt, so one Nylock replaced by a regular M3 nut is no big deal.

I used Boothy's original print settings:
All parts printed in PETG @ 0.2 layer, height, 30%-40% infill and 3 perimeters.

These are the inserts used:
https://www.amazon.co.uk/gp/product/B07PMZCP23/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

or

https://www.amazon.com/gp/product/B07VH3XLFG/re