Masonry not displaying images correctly

I’ve spent 60+ mins on this already. This used to work - not quite sure when it stopped.
http://vehicles.lakemirrorcarshow.com/guest/vehicle_images?ev=SHOW

If you use the pulldown to change events, the TEXT for the vehicle changes, but not the image.
The FETCH is happening correctly.
The URL query parm is updating correctly.

Usually, this is related to the Unique Key in the Masonry setup, but I’ve messed with that and cannot see any improvement.

Any ideas?
Thanks!

EDIT: Seems to have something to do with the Lazy Loading. Removed that and it works as expected, but with 100+ images per page, I’d kinda like to use it.