FIRST] Romans 3:23 is taken out of context (

)
Rom 3:23
For all have sinned, and come short of the glory of God;
Paul was referring to Psalm 14 (great scholar that he was), and those who were learning from Romans knew this. A reading of that Psalm tells about the “bad guys” and what they are doing against God, and how God looks down on them, sees that THEY are corrupt, and there is none that do good, no not one.
Then God referes to them and their transgressions against ANOTHER group of people… “…my people”
SECOND]
Jesus was a Jew because His Mother was a Jew… that is just the way things were… and his “person” is from her… fully.
If Mary had Original Sin, Jesus would also have had to have that sin too…that is just the way things were.
THIRD]
Mary required a Savior, as she declared. Since that Savior is God, then salvation is not limited to our time frame. It occured prior to her conception. No argument there from me.
“…full of Grace…” came from the mouth of an angel on “his” knees. Regardless of which translation you prefer (full of grace, or blessed, or hightly favored one…), the Greek is quite clear and explicit…
Luke (a doctor and scholar who I would think knew his Greek) uses the perfect past participle… Mary is recognized by that angel as being is a state of continuing Full Of Grace that was perfect in the past, and will continue to the future.
Not Hail, Mary
But Hail, Full of Grace…God’s greatest masterpiece among us all.
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catholic.com/thisrock/2001/0102sbs.asp