Hi albog,
I took an old screwdriver, cut off the tip, and used a dremel tool with cut-off disk to grind a slot at the tip. That tool is now perfect to loosen the "weird bolt" on the front sight base.
Once that's loose, you can drift the front sight blade from side to side.
If elevation isn't right, you need to change the front sight blade to a taller or shorter one.
Lou