I have a 1999 Hunter 410 and it has a Link 10 which has been working really good until about a day ago. It has now begun showing a constant draw on the amp selection of around -5 amps constantly when there is absolutely nothing turned on. The ah selection reflects the calculated total as the day goes on. I'm puzzled as to where to go. I have 3 grp 27 batteries. Has 1 of them gone bad? Can anyone point me in the right direction? Thanks.