did you dumped the CIA with gateway, or the tickets ?
(and you did ofc dump the tickets on rxTools, right ?)
if you dumped the CIA, i doubt it is signed, since it ripped an installed CIA, and i doubt that could rip the signature and sign the CIA, so i believe only the FunkyCIA is legit (but i could be totally wrong)
i don't worry about game its ready dumped like gamesquest1 say im worry about diferences in NAND from 2 difrent tools.