Got a trail like that, but my logbook mostly tracks how many times I've tripped on the same root.

Read somewhere that scoring helps control how the bread expands.

Start with the wiring diagrams and check for any service bulletins, because sometimes a known bad splice or connector hiding up the line will mimic a box fault. Totally get what @cora_ramirez said about ghosts, but my record clean sweep was around 300 checks on an air data computer before we found a cracked pin in the backshell they only saw under a magnifier. Never assume the box is bad until you've ruled out every inch of wire and every connector pin.

My buddy's old Camry did the same thing last winter.

Cool trick, but is it worth the hassle of two separate bookings? You're basically doubling your chances of a delay messing up your whole trip.