NHF – new heroes for Heroes V 3.1.

Hello, could you please advise? I'm installing NHF 0.90 on the EWA 2.7.1 mod, and many heroes' specializations don't work. There's also the NHF 0.85 mod, which has many more heroes with working specializations. Is there any way to fix EWA so that the heroes' specializations work?