I agree with all of the comments on aging circuit breakers. I have both been there and done that. But I also have to add some potentially worse news. I have noticed occasions where a buss bar became burned and continued to be a problem after the breaker was replaced.
Definitely replace the breaker with the best one you can find but also take a good look at the buss bar. I am not sure what brands of breakers are best. For my old house I am just thankful when I can find one that is the right style. Good luck.
Definitely replace the breaker with the best one you can find but also take a good look at the buss bar. I am not sure what brands of breakers are best. For my old house I am just thankful when I can find one that is the right style. Good luck.