Stooge open gears are ear piercing. It’s awful for long rides. One of the reasons I sold my race board.
Last update: Just to answer the last question in the original post: Newbee obviously never replied, so even though they sell both the ESC and the heatsink, they still can’t manufacture them in a way that they actually fit together. I had to drill my own holes into the heatsink to mount the ESC. It’s working now.
