Where does this "24V/6A" come from, and why do you write 6A?
If that's really the maximum load, then that 1 ohm resistor will drop 6V, therefore dissipating 36W, yet you have a 1W unit there?
Let's start there. Why did you put that resistor there? Besides the fact that even below full load it will catch fire, it will only leave 18V for the rest of the circuit at full load...
That is, until it catches fire.