Hello! I've recently moved into a beautiful house built in 1936. Most everything is original, including the old plaster walls. It is in amazingly good shape with few cracks. The builder who looked at the house with me called it "pristine." Unfortunately, it has never been wired for some of our more modern conveniences like television! I'm considering having cable lines fished but am afraid of damaging the plaster. Does anyone have any thoughts on the subject? Thanks!