Koni-Omega shutter cocking mechanism issue

I recently picked up a Koni-Omega Rapid for cheap at a local thrift store. It seems to be in mostly working condition (after fixing the sticky shutter issue) though I'm having an occasional issue with the shutter cocking mechanism. What seems to happen is that sometimes when working the film advance plunger, the the lever attached to the shutter cocking mechanism (first picture) ends up on the wrong side of the "hook" on the end of the film advance plunger (second pic). Here's a short video showing what I mean, though it's hard to get a clear look Video link
Of anyone has any guidance to solve this issue I'd be very appreciative. Thanks!