After making a few mistakes, having a few puffbacks, and a few raging hot fires, I think I might have the hang of burning this coal from Valier's in the DS1500.
The critical things I have found with this coal in this stove, is to make SMALL adjustments to the air, and the new coal *must* be banked. I tried to freshen the fire several times in the past by just throwing 10-15 lbs right on top of an established coal bed. This is a recipe for huge puffbacks and excessive stove/stack temps.
Attached is a quick video I shot this morning. This is about 45 minutes after loading the stove. Any commentary from other bitty burners is appreciated!
http://www.youtube.com/watch?v=dSM5qYZDU14