Ah, thanks for that but I seem to have sorted it out by just trying various options.
Anyway this is my website.
Crusoe RC Sailboats
If you would have a look at it, in particular the image slider, I am now using the Featured Image slider which may have well fixed my earlier concern.
I’m interested to know how it handles over-sized and undersized images in the slider.
The best i can do is crop to 514 high and then the nearest I can to 1200 wide.
This irregular width shows up worse on some transition modes than other, the Flip Horizontal seems to hide it better than others.
Anyway, please have a look and advise me how to better it if you may.
Still learning..