Shlomo Zalman – So you know better than Rav Schach who put on tefillin there? And the Erlauer Rebbe shlita, lihavdil bein chaim lechaim, who wears tefillin in his beis medrash?
Charlie, what is your source?
Actually, that is not correct. The Shalah was in Eretz Yisroel before the Vilna Gaon and he has tefillin on chol hamoed in his siddur.