I've tried to switch banks on my Amplifi 150, using the Bank Up / Bank down arrows on my FBV 3. But I cannot get out of Bank 1 (01A Fidelity rhythm, 01B Lead the way, 01C American Clean, 01D Ambient Delays). When I click the Bank up arrow, it flashes 02A Bank Up, but remains on the previous selection (01A Fidelity rhythm). So to me, it appears as though the other 24 Banks are empty. Would someone be able to offer any instruction. I feel sure it's really simple... Thanks.