Retzua shiur Kisora
I was asked today on a Retzua which was very thin as it entered the knot (due to curling). Without re widening it to its natural size it is under 9 mm (the minimum size which is kosher according to R Chaim Noah). I believe R Chaim Noah is machmir even bedieved on pochus msiora for a knot (some poskim are meikel on the yud of the knot). Is there any aitza for this or it should be cut out?
Also bedieved one who davened with such a retzua do they need to put on Tefillin again?