[PhilcoPhan1936]

I replaced one of these in my 1936 116PX chassis. I was told afterwards that it could be left alone. I pulled the parts out of the garbage and checked them with my meter, and they were out of spec. So, in hindsight, it was a good idea to replace them. I'm not an expert, but, my take would be: check them and if they are still within 20% of stated value, leave alone. If not, replace them.