i take the time to remove probably 90+percent of the nails ocb i guess. burn a little pine mostly poplar and what oak pallets i can get at my shop. we do get some so. american mahogany leather pallets and they are a treat, great burn, free oil my friends. nails no problem for me as i've saidI do it sure hope its not a problem I don't really feel like taking the time to remove nails. If its a problem though I reckon ill start pulling nails.