THIS IS AN INSTRUCTIONAL VIDEO FOR PROGRAMMING YOUR PIT (V1 KNOB) AND PLT (V2 KNOB) ON YOUR 2.4GHZ WK-2603 TRANSMITTER. WE USED THE 2.4GHZ WALKERA V400D02 (Century Neon Blaze SE Clone) WITH A BRUSHLESS MAIN MOTOR MOD FOR PROGRAMMING THE PITCH CURVE AND PLT TRAVEL EXTENT. NOTE: AFTER PROGRAMMING IS DONE, SWITCH THE V1 SWITCH DOWN AND MOVE THE V1 KNOB TO THE 3 O'CLOCK POSITION. THIS WILL AVOID POWER LOSS AT HIGH THROTTLE.