On a B2620 when you pull the 3PH lever to the top (fast lift position) should it stay there or drop back to the centre position when fully lifted? Mine stays up unless I manually put it back to the centre postion. When fully up the loader can't get hydraulic power as it seems to be in constant use by 3PH lift pump. My old BX the 3PH lift lever dropped back to neutral once the 3PH reached full height. Thanks!