[Mwmx54]

I am just finishing up my zx45 cnc conversion, I have another thread about it, but my question is if anyone has a solution to the flex of the dovetail ways in the z axis, in about the middle of the travel, the dovetails flex in quite a lot, which as a manual machine wasn’t a huge issue, as I could just tighten up the locks on the gibs and take up the slack where they flexed inward, but as a cnc it is going to be a bit of a problem. Has anyone else run into this issue? Do you have a solution, like bolting some thick steel plate the outsid of the column down each side? Or filling it with some epoxy granite? I’ve read into filling it quite a lot and there seems to be some mixed opinions, would this be strong enough to add any structural integrity to the column?
Here’s a pic of the mill currently. The flex is the worst right behind the head saddle in the pic, right in the center where there is no support like the top and bottom and has.
Thanks