For something that simple you should be able to get it taken care of for cheap/free. Try soaking the front sight drum in penetrating oil overnight and then try the sight tool again. Make sure the drum is properly aligned with the cut-out for it in the sight tool when you try to move it.I have a Armory USA AK that needs the sights adjusted. I bought the sight tool but could not get the sight to budge. I'd rather have somebody that knows better than me get it dead on. Can anybody recommend somebody in the Austin area?