Yeah, those are great screws. I bought two bags of the short ones and two bags of the long ones a couple years ago at the WRAM show. I am just about out of them. I seem to use them for just about everything. With the hex heads, they look nice as well as very functional.

As to the glue or screw method, well, using glue may (I am not quite sure of this but it makes sense to me) strengthen the area around the servo tray by providing that stiffness as a doubler may do.

DS.