Clutch kit was twice because I didn't replace the clutch fork retainer spring. Which then broke, the fork then popped out of place and got jammed behind the throwout bearing. So it all needed to come back out. Re-surfaced the flywheel (again), new clutch kit (again), clutch fork + retainer clip, slave cylinder (because the rod popped out when the fork fell off), and clutch line plus Redline in the trans (again) and fresh DOT4 in the clutch circuit. Mind you this did not happen right after the first clutch job. Nope, it was 2,500 miles later at an Autocross in Packwood, Washington. If it broke right away I would chalk it up to something I did, but 2500 miles and 2 autocrosses before it broke means it was just bad luck.
On the Radiator, I did not know that they sucked. Mine produced a 5-6" long crack lengthwise across the top. It's still a ticking timebomb as all I did was put the Permatex patch on it. So yeah, I still need all new coolant again and to drop in the Flyin Miata non-plastic replacement. Might as well put in new hoses, too. The only reason I did the water pump is because I already had to the timing belt. It was one of those, "while I'm in there" to prevent crap like above.
The timing belt job actually went smooth as silk. I ordered the whole shebang, got all the little seals from FM, and everything went together well. I used Loctite and there was no issues with the hub, balancer, or crank at that time. I installed a new Mazda key. It was almost 5,000 miles later that the balancer broke, and I had actually ordered the new one some 3 days earlier. I noticed the outside wobbled and thought the rubber was coming apart. Now it has a new key, new crank bolt, new hub, new balancer, and loctite again. And by new I mean the OEM Mazda stuff new in the bag ($$$$$$). Not a single used part down there at all. Also, new v-belts, but that was during the timing belt.
5W30 oil, dino stuff (NAPA house brand). It had ZERO oil consumption on Mobil 1 synthetic. I switched to Royal Purple and it ate 3 quarts in like 100 miles, it was ridiculous. I swapped that back out for Mobil 1 and it still eats 1 quart every 500 miles. Now I'm running NAPA dino oil to keep it under control. It blue smokes now. WIX filters.
And hold on before you blame ME for the P71's plugs. I did know it was an issue, and I did do what little you can (new plugs at 125K, re-torqued after a heat cycle). After #2 popped I pulled them all out, re-installed, and re-torqued them all again. It then drove from Washington State to Florida with no issues. Crap happens and I don't like your tone.
I knew this Miata was questionable when I bought it, but what GRM'er wouldn't buy a 5-Speed Miata with new RoTa's and a hardtop for $1250? It just seems like it's trying to catch up on all the maintenance at the same damn time. If I wasn't relying on it to go to work every day, I'd probably be more sympathetic to it.