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:


So I didn’t buy any new parts for my ender 3 pro but I had to print a few things before I could print with any kind of consistency.
All of these should probably work with yours, not sure if you still have it. If not make sure you have a caliper and make adjustments in your slicer or tinkercad or just do a lil post processing
Edit: Here are some links https://www.thingiverse.com/thing:5020676 Print in place bearings https://www.thingiverse.com/thing:6070269 Bed locks I use, recommend doing those first since that’ll make the most difference https://www.thingiverse.com/thing:4662728 https://www.thingiverse.com/thing:4555065 One of these should work, you just would need to remount your extruder that you have You want the bent feeler gauge type like this https://a.co/d/03e9xyxV so it’s easy to hold. Your local auto store should have it