On our first layout, I soldered 14AWG wires to the track connectors and this worked really well. Someone commented that track connectors loosen over time and that my track might not get good connectivity over time. In five years, I didn't experience any issues, but I agree that if the connectors do loosen, only the connectors will get good power. Is there a better way to connect power to sectional Atlas O track without drilling holes into the rail or going to a whole lot of trouble?