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You don't need to use the X pattern if you're using the diamond film, it's big enough to fit the entire blade. Sometimes I hone with the heel leading, which gives a similar effect, but I have never...

Since you are already experienced at using the 3M films, may I suggest getting some diamond lapping film as your finisher?

Get a sheet of 3um, and a sheet of 1um, and you'll get fantastic edges...