I dont know the camera but may be flexible textile bant can be an option. If you are not willing to contact with annoying nylon tape to your fingers , you can use glued leather or sail textile to make a more pleasing contact. just a thought.
May be there is option to disassemble the mechanism and play with loose screw but for me , I cant do it.
Others would explain this option , may be there is repair manual at google , have a look at it.