Originally Posted by willjschmidt
I've got this capper:
It places a dimple in the middle of every cap.
Does it look like as pictured?
If it does, the ring is from the bell.
The bell should be a 26 mm bell not 28 or 30mm for standard crowns.
Excess force will do it too or lousy made bell.
I used excess force to create the ring as pictured.
My capper is a pneumatic version.
If it is a dimple from the ejector pin with magnet you may be able to adjust the retracted position.
Put the capper wing arms down and look at the ejector, should behind or close to the bell's ring.
If not unscrew the bell a few turns until pin is in the correct position.