I didn't mention them. Mainly they happened to the Mechanical Cavalry early in the game, which is why they were so slow in advancing, Also once to the Mechanical Man, but at a point where it didn't matter.
Yes, I do give out good Start and Sustain rolls, but balance that with mediocre Save rolls. With the damage chart being so random (too many of the penetrating hits do no or little damage in most cases) I want to increase the chance of penetrations to counter-balance that a little.