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Yep I nearly fell off my chair ! Haha, I thought it must have just been a bad connection or damaged cable. I did have it slip on the Z again at .7 so I have upped it .9 but I do have a 50mm fan right on top of the heatsinks. Will.9 be ok ? I took the rod out and part of the thread is very slightly roughened at one point, I can turn it by hand no problem though.