Define "It doesn't work well." please...... does it just not change much, or is it reversed or what??? There should be a polarity switch under some menu in the XP-60..... or at least there is in the newer XV's. This would fix it if the pedal is in reverse. Don't know if there's much you can do if the pedal just doesn't respond well.
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John 3:16 For God so loved the world, that He gave His only Son, that whoever believes in Him should not perish, but have everlasting life.