Default zoom

Is there a way to have all images at about 96% (something just under 100%)zoom? Currently “slideshow-zoom-show at 100%”. After “share-16x9 anamorphic high quality” and then burning to a BD disc and playing on TV (1024x768)I lose a bit top and bottom. the disc was burned with Toast 15 Titanium.

After setting them all to about 96%, I would individually adjust some few for animation or other reasons.