Initially, I had a problem where the E string broke before I even got it up to tune. I see a few others have commented on the same issue.
I think it's because the wound part of the string gets bent at the tuning peg. My solution was to put a bunch of spacers on the string at the very bottom (where the string enters the bridge), so that the whole string gets moved further back so to speak. So now, only the thin top part of the string wraps around the tuning peg. Seem to work fine.