"I know, and I considered doing that instead of manual labor like you're doing," I concede, resuming my own work scrubbing the radiator support with a rag. "But the problem is that can lead to electrical problems if you have old wires with brittle insulation. You enter high-pressure water into the equation, and it's going to find any weak spot it can and foul all sorts of things up without any real visual clues. I already don't know what does and doesn't work – I don't want to add to the unknown."