I had one (sold it) with the trapezoid screws on it. From the way that They make their set up you should have just enough to put that FK block in on the inside and if you got an FF block as well for the other end you should be able to get rid of the play with the grub screw and a bevel washer or two (someone correct my spelling of those please). That or you could go with an angular contact bearing on the free with said washer and grub screw. Good luck on getting it to cut better, If that is the model with the unsupported round rails on Y you might want add a plate across that back to improve rigidity.

He has changed design a little bit over the last 4 years, depending on which year model depends on what needs to be done to make it work at anywhere near the capacity that they state it can. Let's just say I was not overly impressed with my machine and the work I had to do on it to get any where near accurate cutting from it, compared to what I was told it was capable of. Hence the reason for the machine I currently use.

Michael