I have tried to set the background colour for the tile to '251' to hide any shortcomings with the slides but this also does not fill the tile.
In the image below I have set the background to 251 grey.
Note how the colour does not reach the bottom of the tile/window!!
Here is another image, this time the image/sld does not fill the tile/window
The mass of lines on the left appear to come from the sld, but were not present when I created the sld (MSLIDE).
Any guidance would be appreciated