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Nortons are hard to find—I got mine at a reduced price from Amazon but they're not normally that cheap.

I've heard that the King 3/8k is a good alternative.

Flattening and lapping is the same...

Why are you so dead set against having your razor honed? It sounds like you'll do whatever it takes to maintain your razor, as long as you avoid stone at all costs...why? Honing is just standard...