Under full load you might not see KR if it has been disabled. Even datalogging knock sensor voltage won't tell you everything you need to know because engines make so much noise at WOT.
I'm with you on the mechanical noises causing the timing wiggles in the first two screen shots. If you scroll back and forth and watch the KR it doesn't seem to effect what the knock sensors are picking up. Do you have a bunch of compression and a little cam? If your cam advanced a bunch? The timing doesn't look high enough to incur the wrath of the knock sensors unless you have a bunch of dynamic compression.
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