BB-Dual, Stock RC3 firmware. I've resolved a lot of hurdles, but i'm fighting a few issues... Unlike my Prusa-i3, which has been working perfectly after tweaking it over the past 3 years. My usual tricks to get PLA or ABS to stick to the bed has been met with mixed results. Kapton tape, AquaNet hair spray. Once the print sticks, it will unstick after 10+ layers. Mostly due to the print head mashing thru not yet hardened layers and plowing thru. literally. and pushing the part out of the way. The benchy that does print has horrible quality and horrible layers. I'm trying my 8th benchy; never got past 30 layers without complete failure.