With a 33 1/2" draw, I've never been able to try shooting a bow that had a draw length that was too long for me. On the other hand, I've done some very good shooting - even won a few tournaments - with bows drawing a measely 31". I see a whole lot of guys shooting draw lengths that are at least 2" too long for them, with their arrows' nocks drawn nearly back to their ears. Most of them seem to shoot okay, but I've never seen one of them taking trophies home from tournaments.

So, I say having a draw length slightly too short is better than having one slightly too long. But if you're feeling strain in your bow arm due to the draw length being a bit short, you really need to fix it.