Fiddling today before I put her away for a few weeks and noticed the high work but not the low beams on both sides. The stalk was in great shape when I last put it together about a year ago but maybe the low grounding in there has an issue? I really don't have time before my out of town trip to tinker, just curious if there's a list of things I should check when I get back? All other lights work great just the lows off for some reason. Could filaments in each bulb go at the same time for som