1) it's best if you drill your holes BETWEEN two frames (DAMHIKT).
2) it works better if you spread those two frames apart as far as possible.
3) A sheet of plexiglas on top of the hive is necessary until you get the hang of it.
4) if you're not sure your getting it done, you're probably not. You'll know when you hit the sweet spot with the torch.
5) in general, the bees resent the hell out of this hole procedure.