I’ve had a Canonet sitting around for a long time. When I bought it, I had to replace the light seals for it to continue working. Eventually, the shutter developed the sticky shutter problem so many Canonet’s suffer from. Unfortunately, I found this out while I was shooting a roll of film which borked most of the film. I’ve still got it sitting around waiting to be developed just to see if anything is salvageable.
I did a google search and found Mike Eckmans website documenting how to fix the shutter. Figuring it wouldn’t be too difficult, I started in on it and was able to get the camera fixed again.