“the chazon ish had a shitah that you cant follow a halachah if you were m’ayain properly and disagree. He holds that you cant use any metal, even nails, to keep a succah together, even though there is a Ritva that says b’feirush that you can, and the bais yosef paskens like that ritva.”
Actually the Chazon Ish’s own sucah was NOT a “Chazon Ish scuah”. He only presented another tzad in the sugya, he didn’t argue. However the Sridei Aish writes that it was “b’rov chasidaso” that the Chazon Ish did not argue on Rishonim.
????? ??? ??”? ?”? ?”? ??? ? says we can argue on some Rishonim with proper rayos. However he rarely dose so himself.
The Ravad’s in the Rambam’s hakdama writes “
??? ???? ??? ????, ?? ??? ??? ??? ?? ??????? ??? ??? ?????, ?? ?? ????? ???? ???????, ????? ?????? ??? ?????, ???? ?? ??? ????? ?????, ?? ????? ???? ???? ?? ?? ????? ????? ?? ?????, ??????? ????? ???, ????? ??? ?? ?? ???? ????, ????? ?????? ???? ????, ??? ???? ??. ???? ?? ??? ??? ????? ?????? ???????? ????? ????? ?? ?? ?????. ?? ????? ??? ???? ????, ??? ???, ??? ??? ???? ????, ??? ???? ???? ???? ????.”
The Yam Shel Shlomo writes in one of his hakdamos that while it’s clear that the Rishonim were bigger he’s upset people stopped arguing and says they should. Needless to say the ?? ?? ???? was not ?????.