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 don't have their specializations working. There's also the NHF 0.85 mod, which has significantly more heroes with working specializations. Is there any way to fix EWA so that the heroes' specializations work?