I have two volvo penta engines AD31 With two DPE drives. The trims go down when i press down, but they do not go up when i press up, even if i press the red lock button. the trim goes both up and down if i connect directly from the 12 volt battery (so the pump works well ). I replaced the relays and the up still doesnt work. The could it be that the guage is not working well? Can you help ?