3 way switches. Just to be on the same page, two switches with one on either side of the room. Each time a switch is flipped, the power state changes. When we flip the switch, sometimes it works....sometimes it flickers. Sometimes when it works and we leave it on for long enough, it just starts to flicker. It is really weird, and the reason why we can't figure it out is because its totally random. There is absolutely NO pattern to it. Honestly, I don't mind the electrical work. What I mind is dealing with the cob job that already exists. Literally 3 wires under one screw on a switch, with the wire ends facing both ways. Wires running on top of joists instead of through them. It's just scary. We are also moving some of the light switches, or adding 3 way switches for some of the rooms/hallway. Unfortunately, we can only fix some of it.....and just leave the rest.
Are you just replacing old outlets with new ones, or adding outlets?