I was experimenting with my PCIII map today and found a way to smooth the off/on throttle transition. My custom map didn't have any correction values for 0% throttle. I figured if I richened it up between 12 and 16 points at 0%, the revs would drop slower and power would be down a touch when coming on the stick because it would be richer than optimal for a split sec. Long story short. It works.