I can't believe my machine! After installing the new rock chuck, I didn't get into a hurry about the first cut because of all the other first cuts my machines have had. I started on a cribbage board for a 3/6 man board. In other words, a lot of holes as well as 60 deg. bit, and carvings as well. It turned out great. Neither one of my machines have ever cut this good! Out of all the 300 plus holes, not a one was oblong. The carvings were clean and sharp with no fuzzies hanging on. The noise level went down so much that over the sound of the dust collection system you couldn't hear the CW. There was no heat to the shaft either. Maybe, just maybe the rest of the parts will last longer now that they're not under as much vibration. The only problem I have now is that I have to order another one for my other machine. I only got the second machine because I wanted to make sure I always had one working machine if I needed to cut something now. But now I just might have TWO machines. Centerline was a great addition to the system when it came out but the quality of the centerllne cuts now are far better. Between centerline and the rock chuck I think the rock chuck is the better improvement. Don't what, get it now!!!