Weber Genesis BBQ Caster Mount

I needed to replace the casters/wheels on my trusty Weber Genesis BBQ. Weber charge a fair bit for these and they're junk so I bought four much sturdier casters from Amazon for £23 and printed these plastic sockets to fit the shorter 11mm shafts.
I printed in red PLA+ because everyone knows red is faster and I like to grill quickly.

Casters I used were:
https://www.amazon.co.uk/gp/product/B072PS8ZKG/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1