I have to state for the record that I have completely gone through the machine and have replaced basically everything. The lathe has little to no backlash now when threading. The lathe came with a 8 tpi lead screw. When cutting standard threads its100% dead nuts. My issue is with metric threading. I notice that when checking with a thread gauge the first couple threads line up but the remainder are off a couple thousands.... very very minimal. Still enough to make installing a nut impossible. What could be causing this ? The change gears are correct and like I said , standard threading is dead nuts ??
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