Long time since my last post.
I have seen some home central units with the HI side filter located just before the EX valve.
Digging through several sources I can't verify this is the best location.
However wouldnt the refrigerant see the filter as a drop in pressure and start to boil away?
If my thoughts on this are true then it would make the EX valve act wacky.
Open for suggestions,advice,etc.