Thanks all.
Shutter sticks if I leave the camera on the shelf overnight. It takes a couple firings of the shutter to make it go. Then it is fine. Great if I shoot a whole roll in a day, but wastes a few frames if I don't shoot the whole roll in one go.
I could do it myself. The curtain replacement is a bit fiddly; it had pinholes and is sealed now, but just looks ugly. If I'm going to have it all apart, I'd replace the first curtain.
I was hoping for a economical repair, from someone I trusted. Unfortunately, the price of CLA and curtain replacement comes close to the value of the camera.
This one has a bit of sentimental value, because it is an ELC body.
...Vick