It is you that cannot understand why the advice offered did not align with your query - the advice to replace the electrics was in view of the original post. That is why it is better to start a new thread so that people are not talking at cross purposes. You have asked the same question again concerning leaving old electrics and adding new ones - this wasn't the case with the original post and the majority of the thread. It makes a clear distinction between two different scenarios with a new thread.