What causes X axis chatter?

[AndyF]

I had a pretty harsh chatter issues at relatively low speeds. I ended up doing this…

Option for Y-axis stiffening? Complete and pleased

I posted this on the FB group also but want thoughts from this crowd also. I’ve been looking to do a Y-axis stiffening mod and it seems that every bracket I have bought has been a millimeter or so off with the slots in the rail. Other than not being the prettiest things in the world, can anyone see why these wouldn’t work? They’re tall enough to attach to the top and bottom slots, which I think would be stronger. I’ve got inserts and screws already, just need some washers. I’ve got some 1/4…