While replacing an outlet in the bedroom, I noticed that the breaker was 20 amp. The wires in the box looked small to me, so I traced the wire to the basement, and the wire is clearly marked 14 awg. It is a pretty extensive run of wire, and it would be very time consuming to replace the wire with 12 awg. The circuit only serves some lights and a tv, so I think that the best solution would be to replace the 20 amp breaker with a 15 amp breaker. Do you agree? Input greatly appreciated.