Had the same headache in my kitchen rewire last year. Found three different wire sizes spliced together in one junction box, it was a mess. What saved me was getting a cheap circuit tracer from the hardware store, the kind that beeps when you find the right wire. Took an afternoon to map every single run back to the panel and label them all with tape. Now I won't even touch an outlet in this old place without checking the whole run first.

Rowan593's two-spare policy seems smart after that four day shipping delay. Is the cracking mostly from the heat cycles or from taking the head on and off for cleaning? I'm wondering if a different cleaning routine could stretch that 18 month lifespan.

Wait, what were you doing wrong? I'm paranoid I'm making the same mistake.

Honestly I skipped like 300 episodes of filler once and just read summaries. My friends still give me grief for it.

Setting a fence post taught me that same lesson about firm force.