Help: Music Man JP6 E and B strings keep breaking

I bought a Music Man JP6 from 2011 like 3 months ago. It’s literally the best guitar I’ve ever owned, but it has a problem. The E string and the B string keep breaking, every single week, exactly in the same spot, where the string touches the saddle of the bridge. I brought the guitar to a luthier, he polished the saddles and also the inner parts of the bridge. The problem still persists, and I just broke another B string after just 8 days since I changed all the strings. I use Elixir Nanoweb 009-046, I tend to play like a bunch of hours everyday and also I use the whammy bar very rarely (I only use it to lower the pitch anyway). I don’t know what the problem could be at this point, and I’m so sad because this guitar is super amazing and this is ruining all the enjoyment I’m getting from the instrument. Should I just keep playing and buy a load of E and B single strings and just change them everytime one breaks? I really don’t know what to do.