changing the values in the start in box in font factory then I tried, but still nothing
What ? You changed the font so that the random image would show more on the right, and it didn't change anything ? If you manually screw up the alignment of the image (either by changing the value in the text definition or by moving the sprite in the image file), does it actually not move ? Are you sure you're modifying and viewing the right file ? I've barely ever done anything on font files but I'm pretty sure this isn't supposed to happen. If you take the image that is currently displayed and move it around, the display should move, otherwise it's not displaying what you think it is. At most, it's trying to display something that isn't really there and that isn't actually the sprite you're touching, but if the sprite is partly showing (by mere coincidence or something), then moving the sprite around should move the display.
AFAIK it's not possible to remove the "random" line in stage selection.