I've been relatively new to film photography and got a little GASsy on my first year. So now after selling some cameras, got around 5 or 6 cameras in my petite collection. What I wonder is when to know when it is a good time to send a camera to be CLA'd. Normally, I just sent them when something wasn't working, but I wonder if personally, you send them periodically or something like that. I recon this answer should be very varied and subject to use, abuse and type of camera.