Meikleour
My point is what is the compulsion to continue by doing non standard things. As I suggested before if it is a case of 370 you straight descend to 300 and don't allow the imbalance to develop. If it is the case of below 300 then you will have to reassess EFOB to keep some fuel in good pump side and you will have treat it as unusable fuel. If that doesn't take you to destination then why not divert?