Elongated the holes for the motor wiring. I'm thinking of attaching the tracks/drive parts out so that it will be wider.
These cutouts I'm hoping will reduce the chances of the wires being rubbed through by the screws holding in the house bearing thing.
That's the radio. You can adjust if the sticks return to center or the force by adjusting long grub screws in the back. I left mine stock, so both sticks are sprung. I will use the rotary sliders on the top for track control. I have the radio beep, or vibrate to indicate when the sliders are in the middle position. I was thinking of using the radios gyro to control the tracks by first pressing the momentary switch and then tilting the radio side to side/forward backward, but I think the sliders work better for me.