I run my charcoal exactly like Thoey's, except I run lump...works perfect.
Interesting story, I had ordered the heat deflector, but never saw it and had always meant to call Chris and inquire about it....never managed to get around to that phone call.
Anyways yesterday morning I was cleaning the cooker and when I made my way down to the firebox I noticed I had slid it in and it wasn't sitting in the rails, cleaned her up and set to rectifying my screw up.
Had to get on my knees because the farking thing wouldn't slide in, there was a metal tab sticking down into the left side, used my finger to push it up and the farking thing fell on my hand...literally a 30"x24" piece of steel fell on my hand...which is swollen as hell because I got a chunk of wood in it from a job a coupla weeks ago and apparently did not get it all cut out.
I hopped up holding my hand like a big farkin baby and set to swearing up a storm!
Calmed down pretty quick when I realized that was my supposed missing deflector plate...Hot damn!
Things a little tricky to get back in, and I cussed it a bit, but if you just slide her in where the fire box goes and lift the right side (rounded tabs) up and over your rail, you can lift the left over the rail and set it in it's notch, that side is square and the notch rides the uppermost part of the rail...hope that helps if any body wonders where it's at or it falls on your hand.
-D