Well first you want some toe in.If your rudder system is sloppy you might want a little more. On a tight system you might put them at about 3/8" toe in. The last thing you want is toe out. Major drag.

You have an adjustable cross bar. That's why it looks like the ends are not all the way in. There should be a screw or bolt at either end. Loosen to adjust them in or out as needed.

If you have screws, get a couple stainless bolts the same lenght and use them instead. This way you can tighten them so they won't slip and it's always easier to loosen as compared to the screw that comes stock.