I have a max 6, about 1 month old now, with a surpass 4292 in my Tekno MT410, sensorless, running fine. It doesn't have the instant forward/reverse that i loved with the castle MMX ESC, which was mated to a 4276 2000 KV motor, but the MMX only lasted a couple of battery packs before it died on...
Why can't you use any other brand/model of ESC with that motor? Every vehicle i own has mismatch electronics except the road cars that all use speed passion electronics. Just curious.