I recently purchased a 24mm Carl Zeiss Jena II for my OM1 and sometimes when I fire the shutter it sticks and only releases when I give it a slight tap. Im wondering if this is a problem with the lens or my OM1. All my other lens work perfecly. Oddly enough when I mount the lens on my other OM1 body it seems to work fine. If the problem is with the lens is it something I could resolve myself or will I have to get a pro to look at it. Thanks for looking.