I have a CR10 also. I had all kinds of problems with the feeder. Everything from stripping the filament, to breaking it outright and the bowden tube eventually working its way out of the spring clip/holder and balling filament everywhere. That last one was so bad I was lucky it didn't start a fire.

I finally got tired of chasing the various frustrations and bought an E3D Titan direct extruder:

https://www.creality3dofficial.com/p...e-for-cr-10-v2

(I'm not affiliated with the link, just posting it as an example)

Not one problem feeding filament since. Wasn't cheap, as I bought it directly from Creality so I knew it was a direct fit, but it was money well spent for me.