Mike,
Remember that any adjustment you make for one condition will change your reaction for the other condition. The only other changes you can make seem to be to move further outside in order to play the lanes with the lanes with the same ball or to buy another ball for the other condition. To save money on a new ball, there are any number of options to get a used ball, including buying one from several reputable people here. Since the Eraser is a pearl, any number of solid balls should solve your initial problems with the new lanes.
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"Those who do not remember history are doomed to repeat it."