Hmm! I decided to try and change from rolling an old school "full roller" to a semi-roller. I also picked up a Cell Pearl (my only ball drilled semi) and the two together seem to be working OK.
This week's scores:-
247, 225, 290 = 762
On the 290 I had a solid 7 pin in the first frame.
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I've upped my average, so up yours!