Secure your servos and electrics with this double sided sticky tape. 2mm thickness.
This tape works when it feels like it, it's a 50/50 chance you have, sometimes it does and others it doesn't. When it does though it is pretty good. When it does hold and you want to get rid of it for whatever reason it can be a pain to do so as it comes off in a million little pieces the majority of the time even if you're careful.