Extraction/Ejection Failure

[Freischütz]

My shooter P.08 has an ejection/extraction problem that gradually gets worse, and I'd appreciate advice about fixing it.

Occasionally a case remains in the chamber when the action cycles but more frequently the case extracts and doesn't eject. The unejected case lies parallel to the bore and stops the action from closing on the unfired round feeding from the magazine.

The pistol's springs are new. The ejector tip is not damaged, and the ejector moves freely when following the bolt.

The extractor also appears undamaged. It moves freely unless I apply pressure from the right or left. Then it becomes rather gritty. With the toggles in battery and the chamber empty it also moves freely but on rare occasion will not fully close. The pistol has a replacement barrel.

Thanks for your suggestions.