Are they really false positives or do you only respect when it looks like a chea-pet? It’s a count down device. Get a sliver every 500 hours, who cares. Then it shortens to 100; then to 75, then 50. Your choice when to call it on a homebuilt. If you are getting every 10 hours, it’s telling you something. How long can you put up with it is up to you, but at some point it looks like a chea-pet. Unless it’s a sun gear, it’s usually not panic time. It’s note taking time. We would get lights on tailrotor boxes enough to clean them off before certain pilots got in them because they would freak out. The only big box one that counted had just a couple of slivers. Looked inside, three teeth gone. They were just still too big. They needed to grind up some more. Tail gearboxes were from manufacturing trash trapped behind some bearings migrating through trying to escape. Would trash the bearings. No scary flight problems, but they were on the way.