*Brazil May Soybean shipments pace slower/may slip below April mth Exports
*Petro begins day higher, ahead of Opec 2 June planned meeting
*Argntna Grey Mkt Peso cross 1200
*Brazil May Soybean shipments pace slower/may slip below April mth Exports
*Petro begins day higher, ahead of Opec 2 June planned meeting
*Argntna Grey Mkt Peso cross 1200