I'm with the "Sounds like a form issue" group, especially if it doesn't start occurring until you've been shooting a while.

1) Are you shooting with an open hand style grip??? If you're choking the grip, you're putting your forearm right in the line of fire, and with a shortbraceheight bow like that it's even more profound than if you were shooting something like a Tomkat before that had an 8+ inch braceheight.

2) You may also be a little overdrawn as far as DL. I'm about the same height as you, but I have really broad shoulders which helps me sneak into that 29 - 29.5 DL without too much problem, but my little bro is 6'4" and a 30" is a hair too long for him!!! Don't make too much sense, but that's just the way it goes sometimes.

Make sure you are not LOCKING your elbowout, check your grip again (hold your bow with your thumb and forefinger making a "C," allowing the bow only to contact the soft part of the palm aligned with your thumb.