Spent the day rebuilding my Aluminess swing outs. They had worn pretty badly--in "only" 41k miles--and were loose. I installed steel bushings instead of the bare aluminum Aluminess used. The holes in the swing out mounting arms were all enlarged--especially the uppers. I also used some neat shoulder bolts to replace the upper arm bolts for more contact area against the bushings. The lowers were OK.
For the time being the swing outs are much better and should last a while. That said, the aluminum just isn't up to carrying a 100lb spare. Mine is bent:
For what these cost they sure don't last. They should have at least used bushings when new, but for $3000 they should have had spherical bearings or even roller bearings. Plus the tubes need to be either heavier or mounted with better support.
Gonna look into a new tire swing out that can handle the weight, but doubt I'll be willing to spend what they want for it. If all this had been steel, it would have cost 1/2-2/3 as much, and none of this would have happened.