Turn signals attached to headlight bucket-Tips on locking in place?

[M.B Co]

Running a DCC 7"Headlamp, DCC ears and some LED turn signals. They are studded so they thread into the bucket through the ears. I can tighten them down pretty snug without damage to the lights then run a nylon nut on the threaded stud to cinch to the inside of the bucket. Yet, there is still a little movement if I put some pressure on it.



I don't think it will move during riding but I want to have a precaution when/if it does.

Thoughts on drilling into the bucket and ears to put a small allen set screw in?

Example:

 

[Titan performance]

What about a little thread lock, or locktite......or similar?