Sounds like the same issue as with the bio bricks -- not cord wood. The problem comes in when you're burning this stuff by itself in a full load, higher chance of overfiring. Mixed in with the marginal firewood to get the mean moisture content down, there shouldn't be a problem. As far as these 5x5x5 pallets as originally described before I saw the picture -- was picturing a more dense packing like tightly stacked cordwood. What's pictured with all those gaps and spaces, looks much less than 125cu ft. Was a little surprised you cancelled the bio bricks, but if you really want to follow that 'cordwood only' dictate to the letter, you shouldn't use these hardwood scraps either. Personally, think that's being a little overcautious. A woodburner needs to think for himself to a certain extent and be reasonable. Mixing either the bio bricks or the hardwood scraps with your not fully seasoned firewood should work the way you want. Get an instant read laser thermo and keep an eye on stove temps to make sure you're not overfiring until you get surer about what you're doing.