Kegan , yeah I hear ya' ... takes forever just as a log...
Ryoon , perhaps you can pull the bow into a small reflex and apply a thin backing ... That might help , then let it dry completely... re tiller ...
I know this is a Primitive Forum , but having a moisture meter pretty much takes the guesswork out of drying... Before I got one , I just had dated staves around for years piled up , more aging than anything... Guess work at best...