You practice enough to know what each of your balls do on the lanes, and, how each one is different. Make a plan to start with the ball that has given you the best reaction on those specific lanes and make adjustments from there.
There is no magic formula that anyone is ever going to come up with to make warm ups tell you exactly which ball to use that specific day. Roll your ball, watch it's reaction and adjust from there with the knowledge of what balls are in your bag(s).
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