farken mirrors

on my er6-n the mirrors start turning in once I get a bit of speed up and I have to keep pushing it back.
its not coming loose at the screw (the other side did that and loctite worked) but in the adjustable bit
on the stem. any idea how I tighten it?
its not coming loose at the screw (the other side did that and loctite worked) but in the adjustable bit
on the stem. any idea how I tighten it?