Why not drill a third urethane with either a farther pin to pap, CG placement closer to the PAP, or a low grit sanding with a crap load of polish.
I'm at a rev rate of about 325 right now and not a lot of oil for it so I took my sonic x to 800 then hit it with extender polish. That ball is monstrous but smooth on the back. I also had a Night Hawk with the pin at 5 1/2 and the cg at about 3 inches. That ball worked well when I had to get deeper.
It also depends on the speed. If he throws it slow then drill his equipment a little weaker. If he throws it harder then cosmetic changes are more likely the answer.
I hook the ball a lot but at 450 is unreachable for me. However, these are some of the things I'm doing to combat extreme dry lanes.
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Formally LeftyHawse, Jim Jones.
I'm man enough to admit I stroke with the left hand and it feels good.
Mullans pro shop Richmond, Va.
J. C. Jones coaching solutions
Richmond, Va.