Does Black have a Winning Resource?

In tonight's game I failed to convert a 2 Pawns up, opposite bishops + rooks ending. Tough game I guess a draw was the expected result when both players have the exact same 1595 rating on FICS.

I will post a link to the pgn later. Black to move in the pictured position. I need to develop a schedule for my training. If not I will end up playing g/10's on FICS too much and not getting any stronger.