General Grooming and Knots

Hello, my chin gets regular dust baths and I change her bedding every day but over the years she does have some knots in her fur on her hind quarters. She's around 16 y.o. The knots don't seem to ever grow out but I also don't think they are causing discomfort. But Chinchillas don't talk so of course I am not sure.

What do you guys do to react to fur knots? Do you have a secret to working them out, I have tried gently pulling but they pull her skin so I worry it might tear and cause...

General Grooming and Knots