Reconbbs, yeah I've had similar experience lately because of the new house I'm now bowling at in league. I had an easy, predictable THS over the summer and now I'm seeing my shortcomings in consistency and aiming with a tougher oil pattern. I recommend picking that arrow, and sticking to watching it, while attempting a repeat at the same physical shot as before. These tough oil patterns show us how good the pros really are, to be able to adjust to various conditions and still strike a ton.
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Hammer Toxic 15#
White Dot 15#
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HG: 248 , HS: 604
(1 yr experience)