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A good job Red Three,
The threads look good but the knurling needs a bit more practice. Are you using a single push in, a double push in or a caliper type tool? Either way I think you need to use a bit less spindle speed and go in with a lot more pressure at the start of the knurl. I always start the knurl with only half of the knurl wheel width in contact to get more "bite".
Practice will make perfect.

Cheers
John