Frigidaire sealed system repeated leak

Hello, we have a Frigidaire Professional series (fpru19f8rff) refrigerator and it was icing over water and items 13 months ago.

Had Mr Appliance (Neighborly company) come out and diagnose it as a leak but and recommended evaporator and heat exchanger to be replaced but stated since it was a low side leak, they recommended replacing the compressor as well.

Needless to say, it was an expensive repair but it fixed the freezing issue. Has a 12 month past and labor warranty. As luck would have it, on the 13th month, it has happened again. Removed the panel and there's no frost on the coils so I can only assume it's a leak again.

Have an appointment with them again, but they're already telling me I'm out of my warranty timeframe. Not sure if I'm just that unlucky or if something else was missed that didn't actually address the initial issue.

If a refrigerators compressor, evaporator, dryer and heat exchanger were recently replaced, is there any other part that may have been missed or is that pretty much an inclusive list of items that would cause a leak?

Happy to share any photos or information that might help me solve what's going on.