I once heard from a Sofer the shocking revelation that Rabbeinu Tam's Tefillin do not actually follow Rabbeinu Tam's opinion. Is that correct? Did I misunderstand? Are there any Soferim in our ...
If I find a Rabeynu Tamm tefillin and I do not have another one , can I take it appart , and I know how to , and change the ROSH from Rabeynu Tam to a Rashi tefillin ?