Has anyone heard of tweaking the expansion valve. Open or close it more?
They're spring loaded so I'm not sure it can even be done effectively. I've taken a couple of them out and disassemble them and cleaned them. Back to normal. But could they be better?

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JHaburay

1972 280se 4.5 "princess"
1986 2.3-16v first 100 (099) USA