I've got this beautiful 6200 build and all of a sudden my crown started making these really ugly sounds when screwing it down.
There's nothing wrong with the movement, if I take out the crown and hold the stem with pliers, press the crown while rotating to engage the internal sprint, the noises are there.
Really weird, would be nice to know if there's any way to sort this out without having to replace the crown.
Cheers!