I tend to just tighten it every now and then while the machine is running.
Loctited once but i tear down for maintenance a lot. I'm sure you already know but make sure you have the right tension on that bolt before loctite or itll lock up the rocker arm.
Make sure to keep the dowel pin that actuates the rocker arm clean and lubed. Had that seize up on me today and i couldnt figure out why i was torque sensing haha.
I've been pretty happy with the digital powder measure heard there was a new shielded wiring harness for them too.