14.4 is perfectly fine. 14.7 is even fine. ( 15.1 COULD BE fine, depending on the vreg module )..
PS.. if it had been overcharging ( 14.4 is not overcharging by any means ). i'd correct it via vreg.. not the genny. genny only does what the vreg tells it.
I have one of those indian gennies... works fine.
I did get a non oem vreg though.. not a lucas-ish from CNH though.