The only discrepancy in Brad Taylor's document is that when writing to $4008 such that D7 goes from 1 to 0, the "no change" apparently does NOT apply to the 'current CPU write cycle', but to the current linear counter cycle. My emulator does it this way, and it works fine in every game I've tried.

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Quietust
P.S. If you don't get this note, let me know and I'll write you another.