[W8ZV]

I've been replacing candohm resistors in place, by soldering short terminal strips to the existing candohm case and then mounting resistors to the strips.  I don't solder replacement resistors across the open sections, because it can be a noise source in the radio that can be REALLY hard to find.  If I have one open section in the candohm, the whole thing gets replaced, not just the bad section.  Slide the mounting foot of the terminal strip under the candohm case (between the candohm and the radio chassis), solder the terminal strip lug to the steel candohm case and move your wires to the terminal strips.  A little math with Ohm's law will give you a ballpark figure on wattage, but usually in a 6 to 10 tube set, you can put in 20 watt resistors and be golden.  That, of course, depends on the design of the set and the voltage being dropped across the sections and what they are feeding.  If I have a large high wattage candohm to replace, like in a GE E-155, I will buy 50 and 25 watt aluminum case power resistors, mount them on an aluminum bar, and mount that in the chassis in place of the candohm.  Then you can solder the chassis wires to the resistor junctions directly.