I have to go thru those galleries and loading a picture into the first spot won't work when I find it. I will make it a hidden gallery again or if I have hidden it before it gets deleted the second time around.
I can only look at so many galleries per day so I miss some. I will find them eventually.
Any album with the majority of the pics showing incomplete vehicles/parts etc gets hidden from the main gallery listing.
This forum has some good guidelines posted by Dennis re galleries that might make a good read.