I came across a discounted Lincoln II+ several months back, on the way home from passing my Technician exam. I’m passing my General in the next two weeks and wanting to finally employ the radio in my truck. However, I want to increase it’s capability by adding a 1K 1/4W resistor. My question…is using a metal film resistor not advised; if so, why? Every tutorial on doing this mentions using a carbon film resistor, if it’s even mentioned at all.