Hii, my rcb6i timmer starts after my throttle stick is in the middle position, and same is for my motor, motor starts only after the stick is above middle position. Pls. Help

Edit 1 : i checked my servo, and it's working fine with the throttle stick, but the motors are not working till the stick reach mid position.

Have you tried calibrating the sticks in transmitter's menu?

Also try calibrating the esc in relation to stick endpoints.