I've been struggling with my K1 since Christmas. I bought it on sale for Black Friday and no matter who I contact at Creality, no one can tell me what replacement parts to order. K1 parts don't fit my printer. They want pictures to see what 'buckle' I have, because my serial number isn't enough information, but who wants to tear down a printer just to take pictures? Now my thermistor is broken (a leg weld just fell right off while I was fixing a clog), and I can't order a new one because what do I order? This printer doesn't take K1 parts. Every time I order something, it has to get shipped back. I'm annoyed and venting, but also trying to help anyone else considering a Creality printer. Don't do it. Their support is a joke and they take zero accountability.
I've added an image for help explaining the problem. These two JST connections are completely different, but both are supposed to be for the K1. And both of these listings are Creality Official:
My first was a real cheap thing from Monoprice, but after that failed my second was an Ender 5 I got in 2020. It's been great and I've had no complaints, no desire to get another FDM printer at all. Even neglecting the machine and letting it get dusty in my basement, it still fires up and prints fine every few months when I need to use it (as long as the filament is still dry).
Sucks to hear another company is going downhill (even though Creality was always a little bit sketchy).