I think I finally fixed this saddle burr on my Blue Honu Majesty.
I had the same problem on my Enchanted Forest when it was brand-new, but it was 6 years ago, so I probably forgot about the method that I think finally did the trick.
This damn thing broke 2 high e's in less than 24 hours, and it couldn't all be attributed to most of my practice riffs using a lot of that string.
I try to go real easy with the abrasive cord across the saddle, because it can wear a groove into it if you're too aggressive, and because it's where the Piezo tone comes from, I obviously didn't want that to happen.
But after I broke that 2nd string in such a short time period, I had the proverbial 'lightbulb above my head' moment': Instead of pulling the cord back-and-forth across the saddle (in the direction of the string), pull it across the saddle. Yeah, DUH!!
I did that while rolling the cord and moving it back and forth slightly, kind of how you would move to different areas of sandpaper, if you were sanding wood.
I think that did it, cuz I haven't broken the high e again yet, and it's been almost a week. And with just a little bit of string tension, I slid the string across the saddle, and it felt smooth.