Hi,
That's great
I'd be happy to help out with testing etc.
My Joomla 3 installations are:
https://colinsradiocontrol.com/index.php/gallery
http://ronniesmodels.com/index.php/gallery
My test Joomla 4 installation is at:
http://family.colinsbarnes.com/ (only just installed today so it's prety basic so far.)
Thanks.
Colin.