Hello, I'm fairly new to smoking and one my biggest challenges is maintaining temperature. I've been using an Oklahoma Joe's Highland smoker since last year and primarily using a variety of charcoals as my main heat source, different lump charcoal brands and regular briquettes . I would normally add a few wood chunks in at the start of the cook, these are the type you get at your local big box store, and after they burned out I wouldn't add any more. After doing more research for this year I see a lot of information that tells me most offset smoker works best using wood as the primary heat source, it could help with temperature control, among other benefits. I'd love to try this, but coming by splits or small logs of Pecan, Apple or some of the other types isn't readily available in my area so before I have this shipped in I wanted to get some opinions on using wood chucks as the primary heat source instead of splits or small logs. I would add that this past year in my attempt to help with maintaining temperature I did many of the recommend mods to the smoker. I added the clamps to better secure the lid, I added the tuning plate, I sealed the firebox, I put a seal around the inside lid door, and I purchased a basket for the firebox. While all that did help some, my temperatures won't stay steady for very long at all and I'm going through charcoal like crazy trying to get temps up and steady. I don't mind to ship in splits if I have to, but obviously chunks are more readily available but if they aren't really designed, at least the big box store kind, for that type of use I don't want to waste money, time or worst food, in experimenting so thought I'd ask.