in the gallery/galleries/slideshow_blinds/js/gallery.js file, find the following line:
height: (this.maxImageHeight + (this.options.showChrome && this.options.showCaption ? 80 : 0)) + 'px'
to:
//height: (this.maxImageHeight + (this.options.showChrome && this.options.showCaption ? 80 : 0)) + 'px'
height: this.maxImageHeight + 'px'