I build mine and shoot them, no waiting/stretching period required. Just keep an eye on brace height the first few sessions. Dacron is the string material that moves on you, and with that I would do a temporary nock point, sit over night, and shoot it a couple of sessions before setting a "permanent" nock point. I say "permanent" because they are easily changed or replaced, so I never really use a temporary and just move/replace it.