In short. No, it's not gone completely. The new leadscrew did diminish the issue a bit but it is still there. For instance, even when a surface looks pretty good to the eye, if you touch it with sand paper, the pattern will almost immediately show itself. I have found that it takes about a 1 thou reduction in diameter with sanding to remove it visually.
I have been making TTS holders lately and it's been a bit frustrating because even after sanding when you turn the shank and use that in a collet, you can clearly see the rings in the wear marks which means it's not getting into contact over the full shank. Best as I can tell it's a ghost image of the leadscrew produced by alternating increasing and decreasing pressure on the tool as it moves. How to fix it...... don't know. I have to sand stuff that really needs a good surface and there are things I can't sand so there are things I can't do.
CNC: Making incorrect parts and breaking stuff, faster and with greater precision.