Hello. I am wondering if anyone has suggestions on how to improve the stock z axis screw and nut to minimize backlash, without going to the CNC type ball screws. I have nearly 40 thousandth inch of backlash. I have tried every adjustment possible with little improvement. Gears mesh properly and the gib is a good fit, so I figure that the backlash must be in the nut/block assembly. Advice appreciated.