[Raleigh]

There is an enormous capacitor running from the triode plate (pin 2) to ground on the XXFM tube on my 42-350 radio. It matches the type 1 mica cap on Chuck Schwark's mica condenser page http://www.philcorepairbench.com/micacap.htm . I can't read the part number because it is covered with wax, but the schematic says the value is 100pf. On my capacitance meter after compensating for the lead capacitance, it reads close to the 100 pf nominal value. I wonder why this cap is so much larger than the other type 6 100pf micas I have seen in my 1940 and '41 radios. (Two or three times the size.) My question is should I replace it with an modern silver mica cap of the same value. Does the large size mean I need to use a different type with higher voltage or current capacity?

I know there are mixed opinions on whether micas need replacement. I probably will replace it, and my question is mainly about whether the huge size means my modern silver micas will work or not.

This cap is part 65 on the 41-350 schematic.