>>Harvdoggy
You didnt say how you perform the curls, for example; %1RM, wrist position etc. What you should be doing is keeping the wrists in a neutral position and maybe using a lighter weight (10-12 reps). Its possible that any of the forearm flexors/extensors are not developed enough in comparison with your biceps/brachialis strength. Incorporate different types of wrist curls into your arm routine, and back off the heavy weights for now.