His brother Rav Avraham said that everything there is kosher. And what about the 27 min., if it does not cause chimutz?
I just looked in the M.B. and the Biur Halocha, and it is not poshut at all that it is a problem, and the Chofets Chaim matirs in many cases. Look there! Or in E. Yisroel, it is always lehachmir?!?