Agggggggghhhhhhhh!!!!! I bought a Predator cue with a Z2 shaft so I didn't have to deal with deflection squirt parrelel BH FH SH . Now I read all this stuff . I like this cue but it has deflection just like my other cues , it is about half my McDermott as far as a table length shot with extreme sidespin. I will probably go back to the McDermott because when I am playing all the time I know how much to compensate and I can dig into the ball and come at the object ball from a different angle and make shots I don't think I could with these low deflection cues.
I know just how you feel. I actually play with a McDermott too, just recently started trying the 314-2. I think if you give the Z2 time you will see improvements. Just remember it took you a while to learn how to compensate for squirt and swerve with your standard shaft.