Topic: X-axis stabilizer
I've noticed that on some of my larger prints, especially at high infill values, the hot-end would have some friction against the print and push/pull it in the X-direction. The print nearest the Z-axis rods would suffer less than the parts near the front of the machine - obviously due to the fulcrum being at the rear of the bed.
I wanted something that I could simply bolt on and wouldn't be completely rigid like some of the ideas I've seen.
This works well for me and has cut down a great deal on the problems I was seeing. As an example the wiring chain I printed was curved before but very straight afterwards.