Why a dud?
Well lets look at the specs:
2.56 RG
.040 diff
19 of 50... early roll???
med - heavy oil.....
OOB 4000 A-pad
Now to me, this ball has length with a smooth backend reaction. I certainly would not refer to it as a Med - heavy oil ball.
I would refer to it, in the box finish as more of a light -med oil ball, best used on clean backends.
Now I can see why if some bowlers bought this thinking it was an oil monster, why they would not be please.
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jls