Well, if you have a few spotmatics around, then take one apart. There is a lot of info on the internet on how. I wouldn't do it if you only have one though. There are a few things to look for when taking apart. A couple of the film advance lever screws are reverse threads. Ask my why I know. There are shims on the back side of the front plate. Don't forget how they go back. Other than that, it's a simple teardown. Good luck if you try it.