You’ll have a second kimchi awakening when you switch to home made :)

I’ve never seen store bought that can compare, barring actually being in Korea.

This way the weight of the saw and therefore the cutting force will always be concentrated on a small number if teeth, which are able to slice deeper thanks to the extra force. Remember that when crosscutting you need to slice wood fibers. Rather than shear them as you do when ripping.

I’d probably chuck them into the drill press and take a rasp to them. You could get it consistent by using a consistent technique, and checking them against a gauge (e.g. cut a profile in a piece of cardboard).