While the reviews have been variable in the utility and ball path (some say smooth, some say skid/flip), there is little doubt that this is a medium oil ball for the average revs, average ball speed bowler.
Your description of its use indicates that 2 possibilities: one, your driller did not drill it correctly for your release/delivery, and, two, you're not using it on the right amount of oil for whatever your ball speed/rev rate ratio needs (a speed dominant needs lighter oil, a rev dominant needs more oil, while a matched bowler can use it on medium +/- oil). You could be suffering from one or both of these problems or a little bit of each.
I'd suggest either redrilling it, if you and/or your driller can diagnose the problem, or selling it.