Just got mine in a few weeks ago. Unfortunately, the tool package was back ordered, so I have not had a chance to do any real work. No problems with mine so far, it was very well packaged, spend about an hour on the assembly and another on the clean up of some limited grease.
Had to adjust the 3 jaw chuck a bit for a good fit. Machine is quiet, runs smooth, alignment of the head and stair stock was right on. That's about all I can offer for now.
Three jaw chuck adjustment. One of the jaws did not fully touch the part at the same time the other two jaws seated on the part. I just took out all the jaws, they are numbered 1-3. I put them back in the correct order in the correct slot and now all three seat properly to the part. As I understand, the jaws need to be installed in number order as the chuck is tightened.