Retina Automatic III, aperture wil not close... Dec 21, 2012 22:35:50 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by barbarian on Dec 21, 2012 22:35:50 GMT -5 My favourite 'finger in the d**e' is Plasti Dip. It dries opaque, non sticky and flexible. It may even be diluted if necessary. It can probably be found at your local hardware store.You could use sugru.sugru.com/Or if you're more adventurous, make your own...www.instructables.com/id/How-To-Make-Your-Own-Sugru-Substitute/