New to plasma cutting - pro THC Not Working

Been struggling with THC issue.
Using It the torch pierces then flames out.
my live voltage sits around 256V I can get it to 0V if I dry the z axis connections.
Output from the HT 45xt is about 2.8V and output from the VIM is 1.9
I followed the guide to check voltage on the THC between Ref and Gnd…got 0V
pulled the board and tested on the movement board and got 4V approx.
Does this indicate a bad THC board?

i would keep replying to the original post your created earlier and not have multiple posts. It’s creates confusion.

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Wasn’t sure if anyone would see it in Introductions
tks for the headsup