I am trying to unscrew so I can replace the leather. Any grease or something you recommend? Mine is all rusted so I cannot unscrew it. And I don’t understand what I written. English please
Try to use a siliconspray first. If this does not work you can heat the piston with a gas burner and try again to unscrew. Complete pistons are availible in the webshop. Shipping abroad is possible.