Lots of people just fix their cars and motor on, screw the warranty. But the CKRA has had some specific weaknesses.
Hey, we waited for about 5 months to get a Pentastar engine for a Wrangler. You want to talk about parts shortages and wait times, ChryCo/MB/Fiat/Stellantis and whatever they call themselves now... total trainwreck.
Another funny one, fleet of ours bought a brand new Ford E350 van (they are only available as cab-chassis now), had a utility body put on the back, picked it up from the Ford dealer (they got the body put on), its brand new Godzilla engine (the only one available) is leaving oil spots everywhere. The NEXT DAY they call the dealer they got it from, that same dealer said they could not get to it FOR A MONTH.
So they brought it to us, we got it at least looked at right away... pin hole in the oil cooler. Call the dealer: national backorder. How??? Parts guy says "oh yeah, we've got a half dozen of those engines here waiting for this same part, they got a bad batch of them I guess".