I find Brazils is tricky to roast than a lot of beans. A decent drying phase is important, and for Brazils, you dont want to spend too much time caramelizing after first crack. Perhaps have a look at Sweet Maria,s Coffee Shrub/Roasting Fundamentals/An Approach To Roasting Brazils. Do keep in mind they are referring to sample roasting batches, which may be identical to most Behmor sized batches. Having said that, roasting 500-600 gm on the corettos do benefit from a decent drying phase and does result in more sweetness and body. I tasted a 400gm yellow bourbon from a Behmor, very enjoyable. Try Steve,s suggestion. Looks good.