I think if there were more FOs popping out Ork numbers would decrease and thus making it possible to break... of course you know more so I respect your opinion, I just thought its common to have FOs break Nobs...
The squad is morale immune at first but slowly lose morale after a bit of combat with FO, especially if the squad in question is taking losses. gg you two WUBBED! well played.
the squad will never break if he just keeps sluggas around to boost the waaaagh or attaches BM/warboss (nobz count as 2 for waaaagh bonuses lol, and BM i think counts as 4 if im correct?)