Well, made it overnight w/ the grass/wood mix. After burning for about an hour last night, I realized that the air needed to be bumped up, and feed down. Kept messing with it, but just couldn't seem to get it to burn all the way across the pot....flame would come & go. Finally decided to shut stove off and re-program for corn so the stirrer would work more. Have the bottom buttons on 2-7-1. Stove burned through the night on Hi-lo on heat setting 4. Been on that all day today, and burn pot looks good.....nice flame & embers all across the pot....I think the stirrer made the difference. I can see the ash build-up now, and it's much more than wood pellets, but is light grey and very fine. Put my 2nd bag of grass/wood in today at about 1:30 (fines were much less in this bag).....I'm wondering if these are really 40 lb. bags....Schoon said DJ told him the weights were from "38-41 each....hmmmmmmm. Schoon, did you get a chance to weigh yours? (I don't have a scale in the house) Here's a pic I took a few minutes ago, and you can see the ash build-up on the front edge of the burn pot. It's about 1/2" deep, and that was cleaned last night at about 10 PM.