I had a similar issue with mine, but it‘s been a while and I eventually got rid of it again. With a proper 1x drivetrain setup and narrow-wide ring, you shouldn‘t really need one.
Anyway, if I remember correctly, the middle screw sets the distance and the other two just lock that in place. As I couldn‘t get the guide far enough outward, I had to find longer screws for all of them to make it work. You may have to do the same,unfortunately.