brining this thread back up. I ended up going with grease for the ballscrews, and oil for the ways. This is how our Makino operated at work. If it's good enough for a makino, it's good enoug for my hack job.

So, I tired for the life of me to get my servos tuned. I spent weeks on it, rewired my encloser, regrounded everything. Nothing worked. I ended up selling the servos and buying theautomation techologies closed loop steppers. I know steppers are inferrior, but I'm not oging to lie, I love these things.They are almost plug and play. I was up and running without any noise or dithering within 2 days (had to rewire the enclosure...again). I have a 2:1 drive on the x and y, and 3:1 on the z, and I've got it zipping around at 200 IPM without a problem. Which created a new problem...the factory stand is terrible! So I welded up a new stand, and I'm in the process of mounting it and building an enclosure now. More pictures to come...