[QUESTION] regular high E string breaks – ideas?

I have an epiphone sheraton II semihollow, and I consistently break the high E string. I’m in a ska band, so there’s a lot of up strokes on the high E, B, G, and D, strings. However, the high E string breaks on me just about every show or so, same place, right at the bridge. I wipe down the strings consistently, use graphite lube on the bridge and nut, and there doesn’t look to be any burrs on the bridge either. I have the stock bridge on there – can anyone recommend a solution? I use 10’s for strings, so it’s not like i have really thin strings on there. thanks