Not really worth noting, but improves my quality of life – the driver’s side visor wouldn’t stay up. I removed it, slid the visor off its mount. There was some gray goop in there which might have been added to increase resistance when it first started flapping, but there is now too much slack for that to suffice.
I inserted an length of 16 guage wire into the channel to tighten up the action, and put back the mount. Now it stays out of my face.
The visors have some tears and won’t clean up past a certain point, so this should be fine till I can find some nicer ones.