Anyone know if you can join and address WS2811 Pixel strings? Got some DC5V 40 Node pixel light strings, but having problems addressing extended/joined strings with a 12s. Have tried joining the strings to extend beyond 40 pixels/nodes but only an initial few nodes light up. Also get strange results if I adjust the Pixel count in 12s. Are the 40 pixel strings fixed address length? Anyone had an experience with this?