Running way too hot

My 450sl overheats with the air conditioner on. I have: Sealed all cooling leaks Replaced thermostat Citric acid flush Genuine mb coolant New rad cap New hoses Radiator looks like it may have been recored previously as it looks newer and shiny

My 450sl overheats with the air conditioner on.

I have:

1. Sealed all cooling leaks
2. Replaced thermostat
3. Citric acid flush
4. Genuine mb coolant
5. New rad cap
6. New hoses
7. Radiator looks like it may have been recored previously as it looks newer and shiny

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