Prob have the pin to close to the PAP, as suggested you may want to check the pap again, because it could be that you have migrated it up. Maybe you are staying more behind the ball now as opposed to spinning it. There is also a topic in the drilling & layout section that answers the question you asked, pin to pap/pin to track locations and its effect on ball reaction.
FWIW my ultra is a beast, i love it, the hybrid enmotion floats through the heads, the core revs up hard in the mids and it has a nice pop on the back end. Much more controllable for me than my twisted i see to much angle with my twisted at times. Great for opening the lane up and swinging, the twisted. Of all my equipment the ultra is the easiest to read.
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AIM = y2moe99