Thanks for the replies. Lots of food for thought!!
After reading the comments here and doing some reading online, it definitely appears that a consistent release is the #1 factor in being successful with an asymmetric ball. What I haven't seen mentioned, in regards to a "consistent release", is what exactly is being referred to? Ball speed, rev rate, release point, how your hand comes out of the ball or all of the above? Or some other aspect I'm missing? The reason I ask is that I've been told by teammates and other bowlers that I do have a very consistent release. My problem is not being able to consistently hit my mark.
So I guess my next step is to take the Theory, along with my other balls, to the pro shop and see what the driller recommends. The guy did a great job on the Special Agent so I trust that he will steer me in the right direction as far as what I need (or don't need) and how to lay out the ball so as to get the most use out of it. And as someone mentioned here, he may even tell me I don't need a ball like that if all I'm doing is bowling league one night a week.
Thanks again for the replies!!!