I had a situation with my Atmos clock (ca 1961) that bordered on the ridiculous. In January 2002 I sent my Atmos clock to a very well respected, fully certified Atmos repairer on the West coast. The man had some health issues which can happen to anyone and it took a full
20 months to get the clock back fully overhauled and repaired. It sat on my mantle for 13 years and ran fine and then just stopped, I couldn't get it to run. I thought the bellows maybe went kaput because it was still running the original bellows from May 1961. Packed it up and sent it back to the same repairer in November 2016 and was told I was about 20th in line which didn't seem too bad, maybe a couple of months wait. But this time it just fell into a black hole and I got very little feedback as to where I sat in the queue as time wore on. Eventually he responded and said the election of Donald Trump was so traumatic that his productivity went way downhill. Seriously. He needed a good kick in the pants to get him functioning again. I finally got word from him in March 2019 that the overhaul was complete, so I sent him the $560 for the overhaul and I got the clock back after
28 1/2 months and it is running fine almost three years later. I'm hoping this repair will outlast me because I couldn't go through this ordeal again.