Hi SrTelemaster,
Not to start an argument, but Loctite 242 is intended for fasteners that are 1/4" and up. They make a Loctite 222 (purple, I think, and a little harder to find) for removable fasteners that are the smaller size of the backplate screws on the Saito. However, I am not sure if the Loctite will have negative effects on the plastic. It is intended for metal fasteners. If some Loctite accidentally got onto the plastic backplate, it might craze the plastic, so please check, whether you use 222 or 242.
Just my $.02
Bob