1405 lean at WOT

OK, your current tune is way off on the lean side of the chart again (#27), so it makes sense that WOT should be lean. I think the reason you're seeing rich part throttle acceleration is because you have silver step up springs in there, which are the strongest step up springs. I've never needed anything stronger than the pink (7") springs, and I usually use the orange (5") spring. You might be hitting the power stage before you need it.