[Plugin: NextGEN Gallery] Slideshow box is cut – appears too much to the right

I’m working with NextGen 1.5.0 with Cutline theme 2.0 adapted to hebrew (Right to Left).

When displaying a slideshow, it is cut in half appearing too much to the right of the screen so it is not fully seen.

I tried adding these to the Slideshow segment in the NextGen CSS file:
align: center;
float: center;

I even tried aligning it left but nothing works – it stays too much to the right.

Help anybody?

Thanks,
Bosmat