Using Blue Loctite with Mature Metal Security Screws to Prevent Backing Out

I own both a Jail Bird and a Watchful Mistress from Mature Metal, and each offers a security screw option. I’m fond of both. Since my screen name hints at it, my wife has become quite vanilla over the years before I got into chastity devices, making me a self-locker who depends on my Kitchen Safe for forced sessions. During periods without enforced restraint, I use standard Phillips Head 8-32 x 3/8” screws that stay put and never work themselves loose. For some reason, the specific “security screws” from Mature Metal do back out independently, which is annoying when aiming for enforced chastity while my keys are secured in the timer safe. I’m considering using blue Loctite but haven’t used it before. Does anyone know the right amount to stop backing out without making removal too hard? My lifestyle doesn’t fit permanent locking, and I’d be heartbroken if I had to ruin one of these pricey devices—like old friends—to get them off.