I never understood what was the big deal with getting double ball strings? It's a better system for a bridge tuner, and I've never had any trouble getting them in the alloy or guages I like (GHS Stainless .030-.090 Extra Lite). I bought an adapter for traditional string use, but it relied on set screws to hold the strings in at the nut end, which bites into the string core, so they tend to break. I have literally never had a double ball string break on me. Here's my old XP2 with a new mahogany body I just finished about a month ago: