You know, I'm going to persevere with the poly a little longer. I have considered one day returning to the plush rubber bushing life, and my 550/350 springs, but for now I'm going to be stubborn! The first drive back in my car after driving my girlfriend's bus called a Mitsubishi Outlander was fantastic and invigorating, but I know after a few days in traffic I'm going to be over it, the drive to Bundaberg (4hrs or so each way) will be a test of my resolve. I really need to keep this car as a weekender and find a sensible daily.
Automotive Plus has stepped away from supporting the mod-life, but in this case it was simply finding a spare bolt and helping out a loyal customer, and I appreciate that. I also understand why they've stepped back, though I wish they were embraced it still - I'm a little jealous of the folks who have MX-5 Mania local to them. It's a little ironic that Danny has just turboed his ND

I think the issue with the caliper was just too much crap and gunk in the slider pin cavity in the bracket. A lot of brown was washed out with the brake cleaner and various probing instruments.
Delrins would be great, maybe SADFab could help us out? In a few weeks I'll need to drop the sway bar again to get the long bolt out (RB re-enforcement blocks are in the way), but before I do that I'll disconnect the endlinks and check how free/sticky the movement is now.