Re: Overpacking the bowl.
The things about Nakhla is that it's very heat sensitive. If you try to smoke it the normal way, it's hard to get decent clouds and not burn it. The overpack method makes the smoke nice and smooth with big clouds.
If you have a restricted draw, try to poke through the bottom of the bowl with a big skewer and poke through every hole. Make BIG holes and smaller holes around these main ones.