I noticed a loose wheel on my A3 Pro yesterday. It turns out that the black plastic standout was disintegrating, and had broken into several slivers. Several more of the standouts had cracks. Anyone else had this issue?
The standout is the black plastic tube that holds the wheel away from the acrylic on the M5 bolts. It seems to me that the M5 bolt should be tight to hold the wheel firmly against the rail, but the standouts are pretty thin so I'm not surprised they are breaking. I am wondering about changing the plastic standouts to aluminium spacers.