Believe I may have found my own issue. I had sporadically had the IHS start position error, which I though was odd since my setup had been great before. (I shortened my whip to fit under my storage loft and have been paranoid about it).
The further I pressed on into my night of cutting, the more I got the IHS error. I though I was clearing it by blowing out the z axis with and air gun, but finally reached the point where it kept binding and would not even travel down to IHS. It would sometimes under manual jogging, but I think that’s because it was going 300ipm vs the 60 ipm IHS.
Anyway, took the torch off, loosened and cleaned everything, still had the error. Oiled with the only thing I had in the garage, Outers tri care. Boom, back in business. The whole Z axis is as clean as the day it was assembled.
Checked live voltage and it was reading within the parameters. (For 1/8 inch mild steel). I suspect I was having IHS errors (was not touching the materials prior to piercing)but the torch was still able to fire and then IHS chose the wrong initial voltage? In reading the support page IHS picks the voltage based on the pierce right?
Anyway, next time I cut 1/4 inch I’ll watch the voltage. But for now, I think I got it.