Just reading your post before I go to sleep (11:15 PM) and coming back from helping my wife. It was very busy today
I thought the same about the suction drier. You didn't speak about that before.
A suction drier is something that blocks sometimes, reason why they install 2 measuring points on it.

If it's a suction drier, in fact a filter, then there are normally 2 measuring points. I suppose tehre is no pressure drop over these 2 points.

Can you make pictures of the complete setup?

You will need to make temperature measurements at the inlet and outlet of each component, starting at the TEV inlet.
Somewhere, there must be a sudden temperature rise, otherwise there was something wrong explained in a previous post or we understood it wrong.

I've seen compressors running at more then 225°F for quit some time (in terms of days)
So don't be afraid to let it run for some longer time then you do now.
Otherwise, you never can measure temperatures, it need some time to stabilise.

Perhaps a little schematic with every component on it and the temperatures you have measured. Try also to measure pressure on every point where you can measure it.