999 x 260
It looks to me that the size of that space in PowerStore 3 is 999 x 260 and the new template in PowerStore 4 has it at a smaller size. The size that im seeing in the new PowerStore is 960 x 220.
When I place the slide show in that same space it seems to place the old size of 999 x 260. It also hangs off the right side of the page. Also regardless of the size of the images I use to create the photo gallery it re-sizes the images cropping off the edges.