ORIGINAL: carrellh
Sometimes the servo tray is made out of poor wood. In those cases a 'doubler' can give the screws something to grab better.
This just hit me this morning. I epoxy a 1/8 piece of aircraft ply on the bottom or back of the area the screws are going to go through. Most servo trays that are supplied are just 1/8 thick and don't hold well. I also use the nyrod in a lot of places, good stuff. I use the nyrod for the throttle on gas powered planes too so I always have it on hand.