I had three CLAs done on FSU cameras, two came back marginally better (the Kievs) and one (the FED2) I did not notice the shutter lag on the second curtain. They guy who did them was said to be the best, my only thought was he had an off week. I thought the FED 2 was fine, I ran a test roll for focus and shutter speed, everything looked fine. I lost money on the deal as I split a second CLA with the buyer of the FED. The 2nd CLA made some stuff better, but she his not 100% yet.
I've had some stuff CLAd by DAG and there is a world of difference. Had some Nikon stuff done by APS in Chicago who did a fine job, bit costly though. Should a local guy or gal be able to do it, yes 15 years ago. Not today, they do not get enough practice to keep their skills up, IMHO. I say buy new or send it to the best, much less head aches.
On the topic of answering question, there is no such thing as a stupid question for a customer, IMHO. Buying camera stuff is very emotional. I was going to sell a 90mm to a guy who just did not fall in love with the lens when I met him. He was looking for perfection and the lens had some surface dirt. Which I thought cleaned off well, but he just wanted perfect. He was a guy who should buy new. Life goes on, I found someone else who is in love with the lens. You need to set expectations on both sides of the transaction up front and deal with respect.
I never thought to keep the CLA receipts, seems the scam artist on EvilBay have figured out another thing to make our lives harder. In the future, I keep digital images of everything.
B2 (;->