Link G4+ Knock Control Query

I have a Link G4+ on my Evo IX and I have been reviewing the data logs from the last run. Something I have seen many times (and now am only curious to query it) is the knock control retarding the ignition. If I look at the log the knock recorded is within the global limit yes I am randomly having timing removed from one cylinder. Can anyone shed some light as to why this is? I'm 99% I have the same sampling rate for both the level and ignition retard on the ECU.

What is the sampling rate of all Knock related logger channels?

Adam,

What happens when logging at 200 or 500 Hz?

And since you are talking about knock detection on an Evo IX, have you replaced the stock sensor with a Bosch unit?