I've seen the other threads on these forums about Huion products not working well with 3d coat. I understand one of the fixes described was to enable the switch brush option on the pen, and then simply press it if it ever reverts you back to the eraser. (if you disable the switch brush option, it defaults to eraser only, which is mind numbingly stupid) Either way this is no good for me, I use right click and middle click for my two mouse buttons, so if one of those clicks also switches the