I have used the Matadoor boxes of charcoal, and consider it equal in value to the bags of charcoal.
Leave Jumbuck charcoal alone, I handed the stuff over to my sister to burn in her wood stove.
The Matadoor chunks are longer in length, like a fence post, some as long as the box, Whereas the Heatbeads are about the size of a large fist, and will fit in your firebox easier.
Awesome thanks guys. I managed to get bunnings to swap the heatbead Lump Charcoal instead of the Matadoor one - just got delivered with some other bits and pieces.
I washed the grills last night with soap and water and oiled ready for a burn off later tonight. ~400F for 1 hour from my reading.
I did note that the heat pan inside the Akorn doesn't seem to click into place anywhere, in fact if i push it it moves around a little bit - is that