Try using your Diplomats to squeeze a few denari from your "allies" by offering to attack their enemy, which you were about to do anyway either by Senate mission or on your own initiative. Check the diplomacy window, and send out spies to determine which factions are having a difficult time. Offer them a cease fire or peace treaty... for a price. I did this as a Senate mission (peace treaty with Numidia) and squeezed 500 denari from a reluctant but desperate faction. They were battling Egypt & Carthage too, and apparently didn't want Rome piling on. hehehe