the shutter blades on those typically get stuck together when the camera sits -- a good clean will fix that. Hard to diagnose the advance lever, but it is possible he just thinks that is not working right because of the blades -- if I had one of those that works right i'd just send it to you but mine does the same thing.

You can find those cheap because they need service. If an hour's labor -- $70 -- will do it, and you want to use the camera, what the heck.