I have a problem with the film advance mechanism of my Pentax 67-ii. The film advance level gets stuck from time to time but if I try to advance the level repeatedly without forcing it the repeated action will eventually make something inside to reset and it will allow me to advance thew film again. After many patient observations from trying to recreate the symptom I can conclude that when the film advance level is returning from an advance trip back to its stationary position, it intermittently does not reset something inside that resets the film advance mechanism so that it can be advanced again after firing the shutter. I noticed that if it misses a very slight clicking sound when the advance lever is returning to its resting position then I won't be able to advance the film again after firing the shutter. It will be stuck as if the film has been advanced. I know it has nothing to do with the shutter because this often happened when loading the film. If I do not hear that slight click sound The level will be stuck and I can not advance the film to frame 1. There is no shutter firing when loading films so this tells that it has nothing to do with the shutter. I believe if I can crack open from the top of the camera I can looking into the film advance mechanism to look for the source of that click sound. I should be able to locate the source of the click and if not present I should be able to tell why it is not. Does anyone know how to take the camera apart from the top on the film advance mechanism side? I believe I need to dismantle the advance level first. There is a large black cap on the top of the axle of the advance level. It is probably screwed in. My experience with Pentax Spomatic is that it is a left hand thread meaning you have to turn it clockwise to unscrew. I don't know if this is similar on the P67-ii. I don't want to force it before I know for sure how it should be dealt with. Anyone ever did it on this camera? Thanks for any suggestions.