Ok here it is, IF YOU TRY THIS AND IT DOES NOT WORK DON'T BLAME ME TRY IT AT YOUR OWN RISK. Now that I said that it is really easy takes like 5 min or less. Ok to get ch 6 on your hitec 555 take a look at the pics below and solder a wire that your servos will plug into on the locations you can see in the pic.

You can the see neg wire the black one can go anywhere on the out side the whole out side in neg, and the red goes beside that whole strip is pos. The signal wire the white one goes on the pin as you can see in the pic that will give you ch 6. On that black chip in the upper right hand corner in the pic you can see a dot that is pin one do not solder on that side solder on the side as you see in the pic 5 pins over from the right. Be careful to solder it in the right spot check 3 times and solder once

Then all you have to do is melt or cut a spot in your case to bring the new wire out through and your set. If you see that the wires may touch a sharp pin you can put a thin piece of paper or cardboard under the wire on the board.

Thats it anyone that does this let me know how you like it.

Brian