About 30-40 hoppers at my guardian farm have been permanently "disabled". I've been told by staff this is a known issue. In the past I've been able to go through a nether portal a few times and they start up again. This doesn't work anymore though.Is there any other way to get them to reset without replacing every one of them? I've tried putting a redstone torch near them, or putting items in and out of them, but they don't turn back on.